Thanks to the efforts of local resident Pak Dodent, coral destroyed around Sumatra by the 2004 tsunami is now making a remarkably recovery.

Dodent lives on the island of Pulau Wey off the north coast of Sumatra and the narrow channel between his small village Ibioh and a nearby island was particularly devastated by the enormous forces unleashed by the tsunami.

“It was like a washing machine out there and all of the coral was broken,” Dodent explained to a reporter from the Telegraph. Afterwards I thought to myself what can I do to make the coral grow again and I started to experiment.“

After some experimentation, Dodent decided to aid the corals by dropping concrete mounds over the sandy bottom, since reef building corals need a suitable surface to attach them selves to. He creates the concrete mounds by pouring concrete into a bucket, and he also embeds a plastic bottle or tube into the concrete so that a part of the plastic sticks up.

When the concrete is set, the devoted reef gardener drops his mounds by boat in the shallow waters near the beach and leaves them there for a month to allow any potentially harmful chemicals present in the concrete to dissipate. After that, he carefully begins to transplant corals to the mounds by harvesting small patches of corals from the healthy reef on the far side of the island. “I am careful to only take a little from here and there so that I don’t affect the healthy eco system”, says Dodent.

Dodent uses cable ties to attach the transplants to the plastic bottles and tubes to prevent the corals from being dislocated by water movements.

Almost four years after the tsunami, Dodent’s coral garden is now covered with coral and has attracted an abundance of fishes and other animals. The coral is thriving and there is virtually impossible to the underlying concrete mounds. The garden currently comprises over 200 square metres and is home to over 25 different species of coral.

To prevent algae from overgrowing the new coral and killing it, Dodent regularly cleans infested coral patches with a toothbrush, but fishes and other coral eating organisms will soon alleviate him of this task. “I monitor and clean it for one year, after that it is up to the fishes,” he says.

Dodent has now recently received a small grant from Fauna and Flora International to develop his project.

Otto the Octopus, an eight-armed resident of the Sea Star Aquarium in Germany, baffled his caregivers by deliberately short-circuiting an annoyingly bright light that shone into his otherwise cosy aquarium.

According to staff, the marine exhibition began to suffer from mysterious blackouts to which the puzzled electricians could not find any reasonable explanation. This prompted the aquarium staff to take shifts sleeping on the floor in hope of solving the mystery. “It was a serious matter because it shorted the electricity supply to the whole aquarium that threatened the lives of the other animals when water pumps ceased to work,” a spokesman of the aquarium explains.

During the third night, a befuddled aquarium crew found out the reason behind the incidents – an annoyed octopus that had realised that he could extinguish the irritating lamp by climbing onto the rum of his tank and squirting a jet of water at it.

“We knew that he was bored as the aquarium is closed for winter, and at two feet, seven inches Otto had discovered he was big enough to swing onto the edge of his tank and shoot out a the 2000 Watt spot light above him with a carefully directed jet of water“, says the spokes man.

Octopuses are clever and curious animals and they can easily grow bored in captivity. If you wish to keep an octopus, it is very important to constantly provide it with challenging tasks and things to explore to keep it happy and healthy. An octopus must also have suitable caves or similar in the aquarium where it can relive stress, carry out its natural behaviours – and hide from pesky lights. You can read more about octopuses in captivity here.

According to University of Queensland marine biologist Professor Ove Hoegh-Guldberg, recipient of the prestigious Eureka science prize in 1999 for his work on coral bleaching, sea temperatures are likely to rise 2 degrees C over the next three decades due to climate change and such an increase will cause Australia’s Great Barrier Reef to die.

Hoegh-Guldberg’s statement is now being criticized by other scientists for being overly pessimistic, since it does not consider the adaptive capabilities of coral reefs. According to Andrew Baird, principal research fellow at the Australian Research Council’s Centre for Excellence for Coral Reef Studies, there are serious knowledge gaps when it comes to predicting how rising sea temperatures would affect the coral.

Great barrier reef

“Ove is very dismissive of coral’s ability to adapt, to respond in an evolutionary manner to climate change,” says Dr Baird. “I believe coral has an underappreciated capacity to evolve. It’s one of the biological laws that, wherever you look, organisms have adapted to radical changes.”

According to Dr Baird, climate change would result in major alterations of the reef, but not necessarily death since the adaptive qualities of coral reefs would mitigate the effects of an increased water temperature. “There will be sweeping changes in the relative abundance of species,” he says. “There’ll be changes in what species occur where. But wholesale destruction of reefs? I think that’s overly pessimistic.”

Marine scientist Dr Russell Reichelt, chairman of the Great Barrier Reef Marine Park Authority, agrees with Dr Baird. “I think that he’s right,” says Dr Reichelt. “The reef is more adaptable and research is coming out now to show adaptation is possible for the reef.”

Professor Hoegh-Guldberg responds to the criticism by saying that the view “that reefs somehow have some magical adaptation ability” is unfounded. He also raises the question of how big of a risk we are willing to take. “The other thing is, are we willing to take the risk, given we’ve got a more than 50 per cent likelihood that these scenarios are going to come up?” professor Hoegh-Guldberg asks.”If I asked (my colleagues) to get into my car and I told them it was more than 50 per cent likely to crash, I don’t think they’d be very sensible getting in it.“

This week, Chilean president Michelle Bachelet signed into law a measure that outlaws all whale hunting in the Chilean part of the Pacific Ocean. The law prohibits all types of whale hunting; both commercial and scientific.

Whales have not been hunted off the Chilean coast for over three decades, but the government decided that a law was needed to emphasise the Chilean commitment to protect whales in Chilean territorial waters. President Bachelet says the law is “a big step ahead in the protection of nature and a major legacy to future generations.”

Several South- and Central American countries has already banned whale hunting, including Chile’s neighbour Argentina (Green on the map). Chile has a 6,435 km long coast line along the Pacific side of South America’s southernmost part, while Argentina has a 4,665 km long coastline along the corresponding Atlantic side of the continent. As you can see on the map, the new Chilean law has led to the creation of a whale sanctuary around the entire southern tip of South America. (Chile is red on the map)

Chile = Red, Argentine = Green

Lobsters caught in the Northumberland Strait in eastern Canada are normally black, so it is easy to imagine the surprise fisherman Danny Knockwood of the Elsipogtog First Nation must have felt when he suddenly found himself face to face with a yellow and white specimen. Knockwood made the unusual catch while pulling his traps out of the sea near Richibucto Village, where the Richibucto Rivers empties into the northern Atlantic.

The Canadian fishermen named his new pet Autumn and made a short video of the animal for YouTube. As of October 8, the video had managed to attract several hundred viewers – some of them suggesting that Knockwood should eat his rare find.

Knockwood has however decided to keep Autumn away from the boiling water and has instead managed to find her a new home at the Aquarium and Marine Centre in Shippagan, a museum where marine animals are housed in real seawater. The marine centre is already home to a substantial collection of oddly coloured lobsters, so Autumn will fit right in.

“In captivity, the lobster could live for many years,” says Curator Aurele Godin of the Shippagan Aquarium and Marine Centre. “And I’ve got many other coloured ones — blue ones, yellow ones, orange and blacks. Every year fishermen come up with them. They call me and I go pick them up.”

Instead of showing dark spots on a dark green base colour like normal lobsters, Autumn sports a vivid yellow colour on top while her underside is almost white. According to a specialist from the Department of Fisheries and Oceans who examined the video and photos of Autumn, genetic defects can cause the shell of a lobster to develop strange and unusual colours. The specialist also confirmed that Autumn is a female lobster and estimated her to be roughly 10 years of age.

Until Autumn is transported to the museum, she will be residing in a an underwater cage near Knockwood’s home.

The below story is unrelated to the first one but is still worth a look as it shows how big lobster can grow:

Reef building corals rely on herbivore animals to continuously remove unwanted algae growth from them, since algae compete with the corals for both sunlight and nutrients. Without regular cleaning, corals eventually die and the reef becomes overgrown by various types of algae. A report scheduled to be published this week in the early edition of the journal Proceedings of the National Academy of Sciences now suggests that having herbivore animals present on the reef isn’t enough; there must also be a proper balance between the various species. This conclusion results from a long-term study on coral reef recovery and seaweed[1] carried out by Dr. Mark Hay, the Harry and Linda Teasley Professor of Biology at the Georgia Institute of Technology, and his co-author Dr. Deron Burkepile who is now Assistant Professor at the Florida International University’s Marine Science Program.

Different fish feed on different algae and maintaining a proper balance may therefore be critical. “Of the many different fish that are part of coral ecosystems, there may be a small number of species that are really critical for keeping big seaweeds from over-growing and killing corals,” says Hay. “Our study shows that in addition to having enough herbivores, coral ecosystems also need the right mix of species to overcome the different defensive tactics of the seaweeds. This could offer one more approach to resource managers. If ecosystems were managed for critical mixes of herbivorous species, we might see more rapid recovery of the reefs.”

Coral reef

The 10 month long study was carried out 18 metres (60 feet) below the surface off the coast of Florida, where Hay and Burkepile placed 32 cages on a coral reef in November 2003. At this point, the coral reef area chosen by the researchers had only four to five percent live coral coverage. Each cage was roughly two metres square and one metre tall (1 metre = 3.3 feet) and the mesh was fine enough to prevent large fish from entering or leaving the cage. The scientists then carefully selected the number and type of fish to place in each cage, using the four following combinations:

· Two fish capable of eating hard, calcified plants

· Two fish capable of eating eat soft plants that defends themselves chemically

· Both types of fish.

· No fish at all

The two species used for the experiement where the Redband parrotfish (Sparisoma aurofrenatum) and the Ocean surgeonfish (Acanthurus bahianus).

As suspected, the type of fish turned out to play a key role in the growth of algae and seaweed on the reef.

“For the cages in which we mixed the two species of herbivores, the fish were able to remove much more of the upright seaweeds, and the corals in those areas increased in cover by more than 20 percent during ten months,” says Hay. “That is a dramatic rate of increase for a Caribbean reef.”

Areas with only one type of fish or no fish at all lost as much as 30 percent of their live coral coverage during the research, while areas with two species of fish increased their live coral coverage from four to five percent to six to seven percent.

“Species diversity is critically important, but we are losing critical components of the Earth’s ecosystem at an alarming rate,” says Hay. “There has been little work on the role of diversity among consumers and the effect that has on communities. This study will help add to our knowledge in this critical area.”

After the initial 10-month experiment, Hay and Burkepile launched a second study where the Ocean surgeonfish (Acanthurus bahianus) was substituted with Princess parrotfish (Scarus taeniopterus). Unfortunately, the cages only stayed on the reef for seven months before being wiped away by Hurricane Dennis in July 2005.

The research was conducted at the National Undersea Research Center in Key Largo, Florida and supported by the National Oceanic and Atmospheric Administration, the National Science Foundation and the Teasley Endowment at Georgia Tech.

You can read more about Hay’s and Burkepile’s work at

http://www.biology.gatech.edu/faculty/mark-hay/ http://www.biology.gatech.edu/faculty/mark-hay/lab.php
http://www.fiu.edu/~dburkepi/front.htm
http://www.fiu.edu/~dburkepi/research.htm

Is the scary looking Atlantic Wolffish, Anarhichas lupus, on the brink of extinction? Today, The Conservation Law Foundation (CLF) and others filed a scientific petition with the federal government of the United States, seeking endangered species protection for this intimidating eel-like creature. If the petition is successful, the Atlantic Wolffish will be the first marine fish to receive endangered species protection in New England.

The Atlantic Wolffish, also known as the Seawolf, is primarily found in cold parts of the Atlantic, but can also be encountered in warmer locations, such as the north-western Mediterranean Sea and the Bay of Biscay. Along the North American coast, it is found as north as the Davis Strait between mid-western Greenland and Baffin Island, and as far south as New Jersey. It is however uncommon south of Cape Cod, New England. In order to survive the cold temperature of its northern habitat, the Atlantic Wolffish has developed a natural anti-freeze that prevents its body from freezing.

The CLF petition cites federal and independent scientific studies that show a dramatic decline of Atlantic Wolffish during the past two decades. According to federal statistics, commercial fishermen are now landing 95% less Atlantic Wolffish than in 1983. Back in the early 1980s, commercial fishermen landed about 1,200 metric tones of this fish per annum, which can be compared to the mere 64.7 metric tons of Atlantic Wolffish landed last year. The Atlantic Wolffish has also worried the scientific community by virtually disappearing from the scientific research trawls carried out twice a year off the coast of New England.

”Based on all available science, Atlantic wolffish are rapidly headed toward extinction in New England’s ocean waters,” said Peter Shelley , CLF Vice President and Senior Attorney. “The dramatic decline in wolffish is a troubling indication that while there is some good news about marine species like haddock and sea scallops that have been successfully restored, our ocean’s long term health continues to hang for other species by a precarious balance. Key species like the wolffish and endangered whales remain in serious jeopardy.”

The main threats against the Atlantic Wolffish are commercial fishing (including by-catch) and habitat degradation, with a major part of the habitat degradation being the result of commercial fishing since it is carried out using trawls and dredges. “Absent some action to reduce or eliminate the destruction of seafloor habitat in the few remaining areas of United States waters that harbor remnant populations of the Atlantic wolffish, it is probable that it will be faced with extinction in those waters in the near future,” says marine scientist and co-petitioner Dr Les Watling.

The Atlantic Wolffish is listed as a Species of Concern by the National Oceanic and Atmospheric Administration’s (NOAA) National Marine Fisheries Service (NMFS).

A UK-Japan team equipped with remote-operated landers has now managed to film a shoal of Pseudoliparis amblystomopsis fish at a depth of 7.7 km (4.8 mi) in the Japan Trench, where the oceanic Pacific plate subducts beneath the continental Eurasian plate.

The deepest record for any fish – over 8 km / 5 mi – is held by the species Abyssobrotula galatheae, but this fish was never filmed or observed while it was alive; it was dredged from the bottom of the Puerto Rico Trench and already dead when it reached the surface.

The Pseudoliparis amblystomopsis film shows the fish darting around in the dark, scooping up shrimps. The shoal consists of no less than 17 specimens, with the largest ones being around 30 cm (12 in) in length.

“It was an honour to see these fish“, says Dr Alan Jamieson, Research Fellow at the University of Aberdeen, Scotland. “No-one has ever seen fish alive at these depths before – you just never know what you are going to see when you get down there.

The filming took place as a part of the Hadeep project; a collaboration between the Oceanlab at the University of Aberdeen and the Ocean Research Institute at the University of Tokyo. The aim of the project, which is funded by the Nippon Foundation and the Natural Environment Research Council, is to find out more about life in the very deepest parts of the world’s oceans.

Just like the unfortunate Abyssobrotula galatheae, deep sea fishes tend to be in a sad state when researchers examine them at the surface and this is one of the reasons why a film is such great news for anyone interested in learning more about what’s going on at these vast depts.

According to Professor Monty Priede, also from the University of Aberdeen, the team was surprised by the fish’s behaviour. “We certainly thought, deep down, fish would be relatively inactive, saving energy as much as possible, and so on,” says Priede. “But when you see the video, the fish are rushing around, feeding accurately, snapping at prey coming past.“

Oceanographers normally divide the deep sea into three different depth zones:

• The Bathyal, which is located between 1,000 and 3,000 m (3,000 and 10,000 ft)
• The Abyss, which is located between 3,000 and 6,000 m (10,000 and 20,000 ft)
• The Hadal, which is located between 6,000 and 11,000 m (20,000 and 36,000 ft)

The Hadeep project has been looking at the creatures inhabiting the Hadal zone, which consists of comparatively narrow trenches in the wide abyss. In this environment there is no light and the pressure is immense. The food supply is also very limited, since photosynthesising organisms can not survive and most other creatures stay away as well. The animals living in the Hadal zone must therefore rely on food sinking down to them from more fruitful waters above.

In order to cope with pressure, Hadal dwellers display numerous physiological modifications, primarily at the molecular level. They have also developed various ways of dealing with the constant night and Pseudoliparis amblystomopsis is for instance equipped with vibration receptors on its snout which comes in handy when the fish navigates through the darkness and searches for food.

Dr Alan Jamieson now hopes that the Japan-UK team will find more fish during their next expedition down into the Haldal zone, which is planned to take place in March 2009 and aims to venture as far down as 9,000 m (30,000 ft).”Nobody has really been able to look at these depths before – I think we will see some fish living much deeper,” says Jamieson, whose deep-sea blog from the expedition can be found at Planet Earth Online.

You can also read more about this story over at deep sea news, a great blog if you want to keep up to date on deep sea discoveries.

Last Friday, 53 year old Florida Keys resident Greg LeNoir saved his dog Jake from being devoured by a shark by jumping into the water and punching the predator.

The incident happened when LeNoir and Jake visited the Worldwide Sportsman’s Bayside Marina pier in Islamorada and Jake jumped into the water for his daily swim. According to LeNoir, Jake is a fast and fearless swimmer who loves to retrieve soaked coconuts and jellyfish. But this day, the playful swimming session took a turn for the worse when a five-foot (1.5 m) long shark showed up and chomped its teeth into the 14-pound (6.3 kg) rat terrier.

As LeNoir watched his dog suddenly disappear under the surface, he didn’t hesitate to come to his rescue. ”I clenched my fists and dove straight in with all my strength, like a battering ram,” says LeNoir. ”I hit the back of the shark’s neck. It was like hitting concrete.”

While being pounded by LeNoir, the shark decided to let go of Jake, who frantically swam back to the shore, leaving a red trail of blood behind him in the water. Jake was rushed to the VCA Upper Keys Animal Hospital in Islamorada, where his wounds were attended by veterinarian Suzanne Sigel and emergency on-call assistant Callie Cottrell. The sharp teeth of the shark had punctured Jake’s skin and some muscle, and skin was hanging like ribbons from his right side and front left leg, but he wasn’t in critical condition.

”He looks great and is recuperating well,” Sigel said on Monday. ”I was worried he may have inhaled salt water when he was pulled under, but there’s no evidence of infection or pneumonia.”

The hungry shark has not been identified, but LeNoir believes it to be a bull shark or lemon shark. Sharks are not uncommon in these waters, partly because the Islamorada Fish Company has an open saltwater pool which attracts large tarpon – a yummy treat for many species of shark.

According to a new study from Uppsala University, the origin of fingers and toes can be traced back to a type of fish that inhabited the ocean 380 million years ago. This new finding has overturned the prevailing theory on how and when digits appeared, since it has long been assumed that the very first creatures to develop primitive fingers were the early tetrapods, air-breathing amphibians that evolved from lobed-finned fish during the Devonian period and crawled up onto land about 365 million years ago.

Lead author Catherine Boisvert[1] and co-author Per Ahlberg[2], both of Uppsala University in Sweden, used a hospital CT scanner to investigate a fish fossil still embedded in clay. “We could see the internal skeleton very clearly, and were able to model it without ever physically touching the specimen,” says Ahlberg. The scan revealed four finger-like stubby bones at the end of the fin skeleton. The bones were quite short and without joints, but it was still very clear that they were primitive fingers. “This was the key piece of the puzzle that confirms that rudimentary fingers were already present in the ancestors of tetrapods,” Catherine Boisvert explains.

The scanned fossil was that of a meter-long Panderichthys, a shallow-water fish from the Devonian period. Panderichthys is an “intermediary” species famous for exhibiting transitional features between lobe-finned fishes and early tetrapods, while still clearly being a fish and not a tetrapod. The specimen used was not a new finding; it had just never been examined with a CT scan before.

So, why have researchers for so long assumed that digits were something that evolved in tetrapods without being present in their fishy ancestors? The main reason is the Zebra fish (Danio rerio), a commonly used model organism when vertebrate development and gene function is studied. If you examine a Zebra fish, you will find that genes necessary for finger development aren’t present in this animal. Researchers therefore assumed that fingers first appeared in tetrapods and not in fish.

It should be noted that similar rudimentary fingers were found two years ago in a Tiktaalik, an extinct lobe-finned fish that lived during the same period as Panderichthys. Tiktaalik is however more similar to tetrapods than Panderichthys.

The Panderichthys study was published in Nature on September 21.