Sharks are facing extinction on large parts of the Great Barrier Reef as well as in other parts of the world. The reason for this is ruthless fishing to provide the Asian markets with shark fins. The fins are removed from caught fish while they are still alive and the sharks are then flung back into the sea where they sink towards the bottom and to their death. Most shark species need to swim to be able to breathe and drowns after they have been thrown back without their fins. A very high number of sharks fall victim to Asian shark fishing vessels and end their life this way each year. This doesn’t just threaten the world’s shark populations but also constitutes an enormous waste of resources as most of the sharks (everything except the fins) is simple flung back into the sea without being used.

Many sharks fishing vessels ignore fishing rules and fish in protected areas and marine preserve which have led to plummeting shark populations in marine preserves as well. This does not only leave us without protected shark populations that might help restock the populations outside the preserves but also put stress on the eco system within the preserves. This might put other species in the preserves at risk as well.

An example of this illegal fishing was recently reported in north Queensland were a research trip done by Richard Fitzpatrick and his team showed that it was hard to find and catch sharks on the reefs off Cairns and Port Douglas.

Mr Fitzpatrick says the decline is the result of over-fishing on the reef.

The team found dead sharks thrown back into the sea in protected areas in the Cairns and Port Douglas, area like the cod hole which might indicate that shark fishing vessels fish within protected areas. They also found sharks that simply had their tail fins cut of and most likely had been killed by people who don’t like sharks and that simply wanted to kill them. It is however possible that they where fished for their tailfins and that they where caught for commercial reasons but if that was the case it is likely that the other fins would have been harvested as well.

The shark fin trade is to a large extent a black market and no one has a good overview of it and how big it really is. This is making it extremely hard to take actions against this fishing and the only way to create effective shark preserves might be to create large patrolled areas that are off limit to all non authorized vessels. A more desirable method to target the problem would be campaigns designed to limit the demand for shark fins. The question is how and if an effective campaign like that can be created,

Divers enjoying the waters off Darwin, the northernmost island in the Galapagos, suddenly realised the presence of an amazing 33 feet (10 meter) albino whale shark (Rhincodon typus), and as if one sighting of an albino giant wasn’t enough, a snow-white southern right whale (Eubalaena australis) calf has now been spotted off the coast of Western Australia.

Common whale shark in the georgia aquarium. See picture of albino here

The whale shark encountered in Galapagos is and adult female and was first observed by naturalist Antonio Moreano as he guided a group of scuba diving tourists. “I told everyone to keep a distance and not disturb it so we all jumped in the water and followed it for five minutes.” says Moreano who also managed to get a few pictures of the awe-inspiring creature.

The young albino southern right whale lives in the whale nursery waters off Western Australia together with its 60-tonne mother. It has been given the name Wilgi Manung, which means “white whale” in one of the indigenous Australian languages. According to Doug Coughran, a senior wildlife officer with the department of environment and conservation, Wilgi Manung might not be a pure albino since its eyes and nose does not display the characteristic pink flesh normally seen in albino whales.

Albinism is a hypopigmentary congenital disordered. It can be partial or total, i.e. characterized by a partial or total lack of melanin pigment. Albinism is caused by recessive alleles and must therefore be inherited from both parents to manifest. Albinism has been observed in many different animals, including mammals, birds, fish, reptiles and amphibians. The name albinism is derived from albus, the Latin word for “white”.

See the albino Whale shark here

See albino Whale picture here

A 380 million-year-old pregnant fossil has been discovered by researchers from University of Western Australia. The fossil was unearthed in the Kimberleys and contains a 6 cm embryo with its umbilical cord intact. Mother and baby belong to an extinct species of shark-like fish that could be found in lakes and seas for almost 70 million years before it disappeared. This is the oldest example of a mother of any species giving birth to live young.

“This is also the first evidence of sex in vertebrates with jaws resulting in the oldest known example of a fish giving birth to live young rather than expelling a clutch of eggs,” says Dr Kate Trinajstic, Research Associate at the University of Western Australia, to News.com.au.

The fossilized species has been given the name Materpiscis attenboroughi. Mater is the Latin word for “mother” and piscis is the word for “fish”, so the genus name literary means mother-fish in Latin. The second part of the name, attenboroughi, is of course an homage to celebrated broadcaster and naturalist Sir David Attenborough. The fossilized fish belongs to the placoderm fishes, a group of fish commonly referred to as ’the dinosaurs of the seas’ since they dominated lakes and seas during the Middle Palaeozoic Era (c. 420 to 350 million years ago).

The fossil has now been given a new home at the Western Australian Museum.

Read the full story in Narelle Towie’s article at News.com.au. At this page, you can also see pictures of the fossil and drawings of what the fish might have looked like when it was still alive.

http://www.news.com.au/perthnow/story/0,21498,23772231-948,00.html?from=public_rss

The fossil find was published in the science journal Nature on May 29 this year.

Another stingray has died at the Calgary Zoo, and it could take the zoo up to two months to receive the toxicology reports back from the lab to determine what the true cause was. Gill irritation and lack of eating were the first signs that the rays were in trouble. Now a total of 35 stingrays are dead. The remaining rays will be placed back into the main exhibit and the zoo is not commenting on weather they will be replenishing the original population of rays.

Toxins in the water may have come unintentionally by people in the petting tanks, and this is why some keepers believe this is an improper way to house these animals. Rob Laidlaw, executive director of ZooCheck Canada, was quoted by Cnews stating “”We don’t believe animals should be taken from the wild so people can play with them.” Ultimately questioning the educational value of such ray petting exhibits. As for the remaining eight. They will be released into the main exhibit for observation by zoo patrons, because it is simply the best environment for them, and they are safe from accidental contamination.

to read the entire article about the Calgary Zoos tradgic loss of cownosed rays visit: http://cnews.canoe.ca/CNEWS/Canada/2008/05/14/5561296-sun.html

(photo provided by: NOAA Photo Library)

Thirty-four cownose stingrays died in a 24 hour period at the new $250,000 dollar exhibit in the Calgary Zoo. Veterinarians are stating that it must be a water problem for so many animals to die so quickly. The nine surviving stingrays are remaining under close observation while the cause is determined and the exhibit remains closed. In just three hours, on Sunday, 26 of the 43 stingrays had died. The following morning the other eight had passed as well.

Further information on the findings of the cause of death will be posted once provided.

to read the entire article visit: http://www.ctv.ca/servlet/ArticleNews/story/CTVNews/20080512/stingray_deaths_080512/20080512?hub=TopStories

(photo is of a Southern Ray not a CowNose Stingray)

CBS News website has reported that a 66 year old man was attacked early this morning by a Great White Shark. The man was training with a group of triathletes in the oceans off Tide Beach in San Diego, CA. The witnesses of the attack stated they heard their friend scream “Shark” as he was drug under water. The victims identity has not been released; two friends helped carry him back to shore, where he was pronounced dead at the life guards station. The bite had run across both of his thighs. It was a single injury, which leads authorities to assume that the attack was a case of mistaken identity.

Authorities were quick to clear the beaches and ocean of people as a precaution, leaving 17 miles of Southern California beach empty. Helicopters flew over head attempting to locate the shark, but found nothing. One member of the Triathlon Club of San Diego says that he saw a rare visitor on the beach prior to the attack, sea lions, which he has never seen on the beach before. Authorities are now assuming the shark had moved so close inland; the attack took place 150 yards offshore, in pursuit of its prey.

This is the first lethal shark attack to occur in San Diego County since an Ocean Beach attack in 1994.

For the complete article from CBS News Visit:

http://www.cbsnews.com/stories/2008/04/25/national/main4045576.shtml