Tiger shark - Credit: Richard Ling

The people in attendance mowed down on cheese and crackers, celery and crisps. But as soon as Greg Skomal, a state shark expert, opened up his mouth, he told them what it really meant to chow down.

Skomal, who was the guest of honor at the Harwich Conservation Trust’s yearly get together this past Sunday evening, gave the people in attendance at Wequassett Resort the low down on great white sharks. He told of tagging them off Chatham’s coast near Monomoy. He explained how they weren’t very discriminant about what they chowed down on, and how they hunt a myriad of fish. Given that there is an abundant supply of gray seals in the area, and it’s ever increasing, more and more great white sharks are going to be making their way to the waters of the Cape every summer.

“You can eat as much popcorn you want or you can have one big steak,” Skomal commented, which accurately depicts why great white sharks like to pick out the gray seals in the area, especially near Monomoy. Just one gray seal can satisfy a great white shark for one to two months.

According to Skomal, who happens to be a shark expert with the state Division of Marine Fisheries, has commented no one can know for sure just how many great white sharks make an appearance every year, but it is becoming quite a “hot spot” off the Cape.

It has been 6 months and 2 weeks since the BP oil spill fiasco in the Gulf Of Mexico, due to an oil rig explosion.

Even though the fiasco is being steadily swept under the carpet, and media coverage is dropping off quickly, the actual impact the fiasco has had is very much still on the minds of researchers and scientists.

There are a lot of unanswered questions about the actual impact BP’s blunder has had on the environment. These questions include: Where has the oil gone? ; What impact will it have on fisheries? ; What are the long term implications? And other such questions are all being delved into, even as this article is being written.

A leading goup of scientists working around the clock to get to the bottom of such things can be found at USM’s Gulf Coast Research Lab in Ocean Springs.

In fact, some of the answers may lie within some enormous, colorful crabs which make their home in the deep, dark waters, of the Gulf of Mexico.

Harriet Perry, a researcher with the team, has been studying these crabs since the 1980’s.

You see, the crabs are being tested for the presence of oil and dispersant as well as any other chemicals that BP may have inadvertently left behind after their little mishap this past summer.

Well, it’s good to see someone still gives a hoot as to what happens out there in the gulf, but with dwindling interest, it will only be a matter of time until the whole thing becomes nothing more than an idle stormy day story…

The BP oil spill fiasco of the Gulf Of Mexico couldn’t have come at a worse time for bluefin tuna: they had recently just made their way into the Gulf – where they generally went to try and mate – to get jiggy with it and make a bunch of little bluefin. Satellites have been keeping an eye on things, and have been a great asset in determining what damage has been done to the bluefin’s spawning grounds.

The amazing Atlantic bluefin tuna, some of the largest of this species of fish can be as large as a Volkswagon Beetle, make their way to the Gulf every year from January until June. The peak time when they spawn is about mid April to May – just as BP was giving out free samples of its precious oil, when the well they had exploded and started pumping thousands of gallons of crude into the area this past April 20th.

This fish, which is paramount to commercial markets everywhere, mate in the surface waters, the females lay their eggs and the males fertilize away behind them. The oil present could cause harm to the eggs, larva and even the adults in the area. To make matters worse, the Atlantic tuna populations of the world have seen a drastic decline of 82% over the past three decades, so it is extremely important that they be allowed to mate without interruption.

Well, great job BP.. You really did cause quite the disturbances… How would they like it if we dumped oil into their beds as they were getting in the mood?

White Snailfish

A brand new kind of fish has just been found in one of the dark “lifeless” areas of the ocean. It was previously thought that the area was devoid of fish, researchers say.

This new kind of snailfish was discovered making its home at an amazing depth of 7 kilometers, in the Peru-Chile trench in the South East Pacific.

Large groups of cusk-eels and rather large scavengers were also found making themselves at home at these depths, which is a scientific first, researchers added.

The discoveries, in some of the deepest darkest recesses of our planet, were made by a group of marine biologists hailing from the University of Aberdeen, in conjunction with experts from Japan and New Zealand.

The team set out on a 21 day voyage, during which they made use of various deep-sea imaging equipment to snap photos of the murky depths, some 4500 meters to an astounding 8 kilometers within the trench.

This voyage was the seventh such voyage as part of HADEEP, a research project cooked up by the boys over at the University of Aberdeen’s Ocean Lab and the University of Tokyo’s Ocean Research Institute, along with the backing of New Zealand’s National institute of Water and Atmospheric Research.

The use of the updated technology really gave researchers the boost they needed to discover this amazing find. Who knows what will be dredged up next? Science has been stale for such a long time, especially when you talk about the oceans, so it’s good to see some new discoveries being made right under our noses.

Danube

The very first dead fish have been discovered in the Danube, the second largest river in Europe, after an environmental mishap left toxic mud flowing from Hungary. A regional chief for the disaster relief services made the following comment to the AFP this past Thursday:

“I can confirm that we have seen sporadic losses of fish in the main branch of the Danube,” Tibor Dobson commented.

“The fish have been sighted at the confluence of the Raba with the Danube,” where water samples had shown a pH value of 9.1, he continued..

“Fish cannot survive at pH 9.1,” he added.

The alkalinity of the water is a measure of just how contaminated a body of water is. The values go from one to fourteen, pH levels of between one and six are considered acid, a reading of six to eight is neutral, and anything from eight to fourteen are alkaline.
“In order to save the river’s ecosystem, the pH level must be brought down to below 8,” Dobson explained.

When the toxic spill first happened this past Monday afternoon, the reading taken in the Torna river nearby were thirteen point five, in other words catastrophic.

The small Torna stream flows to the Marcal, which is a tributary of the Raba, and this then flows to the Danube.

The pH levels ascertained from the Torna this past Thursday showed about 10, so while it is not good yet, it appears that, given the time, mother nature will straighten itself out. However, in the mean time, the local ecosystem will take a huge hit.

The smallest fish in Europe, the Guillet’s goby, was recently discovered in the waters of Scotland for the very first time.

Curious divers happened to snap photos of the tiny bloke while they were conducting surveys of the aquatic life to be found around the Shetland Islands.

Before this, Guillet’s goby has onl been spotted in the waters of Britain three times, but it was never spotted in Scotland before now.

This discovery, which was published in the journal Marine Biodiversity Records, us the furthest north that the fish has been found, and has extended it’s known range by a good 140 miles.

The reason this discovery is so momentous is that the Shetland Islands are famous for their larger fish, tourists flock there to whale and dolphin watch.

However, Dr Richard Shucksmith and Rachel Hope, independent marine biologists were in the midst of making a documentary on the smaller species that make their home in the islands, when they stumbled upon this tiny specimen.

They snapped many pictures of the Guillet’s gobies, known in scientific circles as Lebetus guilleti, at Lunna Kirk during their different dives this past summer.

“It never crossed our minds that we would find such a rare fish or that it would be Europe’s smallest marine fish,” Dr Shucksmith explained.

“When Rachel spotted the goby she knew it was something different so made sure she got some pictures so we could identify it when we got home,” he continued.

Salmon fry

The wild salmon of the North Pacific are becoming fewer in number as they are being forced to fight for their food and rapidly declining living space, as billions of farmed salmon are being released into the oceans every year, a study by researchers out of B.C. and Washington State explains.

The concern is coming from the fact that the salmon populations, mainly of the sockeye, pink and chum variety, across the Pacific Rim is much higher than usual.

“The total number of salmon out there is at an all-time high, in fact, the abundance is about double what it was in the 1950s,” commented a fisheries management scientist at Simon Fraser University, Randall Peterman, who is also a co-author of the newly published report.

Releasing a huge amount of artificially grown salmon to help and supply a food fishery is detrimental to the native salmon, he explains. “Hatchery fish have been causing deterioration in the wild population for some time.”

“The fact is that hatchery fish from one nation can influence the health of salmon stocks in another nation,” Peterman explains. The amount that these hatcheries release, especially in Alaska and Japan, has reached a level of an astounding five billion salmon a year and it’s continuing to increase. Which means that the salmon are under imminent threat.

First it’s overfishing, now it’s over fish releasing? Well I have an answer for you boys, grab the frying pan, it’s time for a fish fry…

Thieves made off with 15 moi (a type of featherfin) from a display tank situated at the Waikiki Aquarium this past weekend.

They forced their way into the aquarium after it had shut its doors for the day, and made off with 15 of the 21 fish in an outdoor tank, sometime between Friday evening and Saturday morning, officials at the aquarium stated.

They made their way over a chain-link fence, cut out an opening in the netting of the tank, and then proceeded to abduct the fish using their own net, officials at the Waikiki Aquarium reported.

“It looks like they threw the moi out, they lay on the ground there and they put them in the bag,” Director of the Waikiki Aquarium, Andrew Rossiter, explained. “There were scales and blood there. There were two dead moi left there in the morning that they missed.”

Workers at the aquarium found the two deceased moi left unceremoniously on the ground in front of the tank.

The estimated value of the stolen fish is around $1,500, though who knows what someone will pay for them on the black market.

Even though the fish were stolen, Rossiter feels the need to implore that these particular fish are not fit for human consumption, as they were prepped for breeding and thus contain some hormones and chemicals which make a fairly unappetizing cocktail.

“I would guess that they’ve been treated probably with hormones and probably with medication because they’re adult fish and they were for breeding,” he said.

One wonders why not take all the fish? And also.. What the heck are they going to do with them?

Red snapper

Snapper fry are all over the place. There are also trout, grunt and grouper fry all over the place as well. The early tabulation of the annual count in the beds of grass spattered about the northern part of the Gulf of Mexico seems to suggest that the larvae of some kinds of fish have survived the BP oil fiasco, and what’s more, there are swarms of them.

“My preliminary assessment, it looks good, it looks like we dodged a bullet. In terms of the numbers of baby snapper and other species present in the grass beds, things look right,” commented a scientist with the University of North Carolina’s Institute of Marine Science, Joel Fodrie, who has been actively involved in the study of seagrass meadows along the coast for the past five years.

Joel’s group has taken samples of the different sea life in the grass beds in Alabama, Mississippi, and the Florida Panhandle. They will be taking a sample from around Louisiana’s Chandeleur Islands come this Autumn.

Back at the height of the fiasco, when a seemingly endless stream of oil was floating about on the surface, researchers were most concerned as to whether the trillions of larvae which hatch each spring offshore would survive the severe contamination of the spill.
It’s looking like they did, and it’s a good thing too. It just goes to show you that mother nature is more resilient than we give her credit for. There is hope yet for the Gulf to make a full recovery, and that folks, is good news indeed.

Metro store

The famous operator of supermarkets, Metro Inc., has united with other big name food, retailers such as Loblaws and Walmart, to help adopt a sustainable fisheries policy, whereby it will stop selling those species of fish which are deemed to be at risk, or endangered.

“Starting today, Metro will temporarily withdraw seven threatened species,” the Quebec-based chain commented in a statement released this past Thursday.

The different kinds of fish set to be removed from the shelves include: Atlantic cod, bluefin tuna, orange roughy, Chilean seabass, New Zealand hoki, skate and shark.

“These species will be substituted with other products and might be reintroduced in the future if scientific reports indicate that their stocks have climbed back up to acceptable levels,” Metro explained.

Metro is instituting this new policy slowly, so as to not completely shock their consumers. They expect to have the policy in full swing in stores across Ontario and Quebec by the end of June 2011.

This policy means that Metro will only be offering fresh and frozen, wild and farmed seafood products which are not on the endangered list, and come from fisheries which are sustainable. It also means that all their suppliers will need to sign a code of conduct, and agree to abide by the new policy when selling products for resale.

“To facilitate the traceability of its seafood products, Metro has developed a new, more transparent labelling system to help consumers make informed choices,” it added.

It’s nice to see big businesses willing to put a bit of pressure on the fisheries to look after the health of our worlds’ oceans. Hopefully this will spur other large organizations to do the same, and the sea will be a happier place.