Archive for the 'Creatures' Category Page 3 of 3



Deep diving sperm whale video


On 17th March 2006, we obtained this amazing footage from an oil and gas exploration contact. We immediately posted it onto the MARMAM list (http://whitelab.biology.dal.ca/marmam.htm). We tried to get more details, but the company was not forthcoming. Since then, we have had considerable interest from various organisations and media companies. The footage was taken at 900m from an ROV working in the Gulf of Mexico. It shows a sperm whale slowly investigating a sub sea pipe structure. Various markings can be seen clearly on the animal including the tail flukes.

Link, via Boing Boing

Melting ice pack displaces Alaska walrus

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ANCHORAGE, Alaska - Thousands of walrus have appeared on Alaska’s northwest coast in what conservationists are calling a dramatic consequence of global warming melting the Arctic sea ice.

Alaska’s walrus, especially breeding females, in summer and fall are usually found on the Arctic ice pack. But the lowest summer ice cap on record put sea ice far north of the outer continental shelf, the shallow, life-rich shelf of ocean bottom in the Bering and Chukchi seas.

Walrus feed on clams, snails and other bottom dwellers. Given the choice between an ice platform over water beyond their 630-foot diving range or gathering spots on shore, thousands of walrus picked Alaska’s rocky beaches.

“It looks to me like animals are shifting their distribution to find prey,” said Tim Ragen, executive director of the federal Marine Mammal Commission. “The big question is whether they will be able to find sufficient prey in areas where they are looking.”

According to the National Snow and Ice Data Center at the University of Colorado at Boulder, September sea ice was 39 percent below the long-term average from 1979 to 2000. Sea ice cover is in a downward spiral and may have passed the point of no return, with a possible ice-free Arctic Ocean by summer 2030, senior scientist Mark Serreze said.

full story

Dolphin birth

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It is one of the rarest and most magical sights in the natural world. 

A bottlenose dolphin goes into labour . . . then a calf emerges, tail first. Mother guides baby gently to the surface, where they swim together for the first time.

Very few dolphin births have been captured on film in such astonishing detail.

This one was recorded at a wildlife park pool in Rimini, Italy, where photographer Leandro Stanzani was in exactly the right place at the right time.

“To take good pictures is not easy,” said Mr Stanzani, who has been taking photos of dolphins for 14 years.

“Most births happen during the night when the light is very poor.”

More text and very good phots: full story link

Ocean creature of the week: blue lobster

Beautiful, and oh so tasty.

Fun facts via Mystic Aquarium

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Description: Blue lobsters are members of the phylum Arthropoda which, in Greek means “jointed leg”, and are related to shrimp, crabs, and barnacles. The blue lobster is very rare and is a mutant of the familiar brown lobster. Like all lobsters, blue lobsters have a hard outer skeleton (exoskeleton) made of a substance called chiton. Lobsters must shed their shell periodically in order to grow. This process is called molting. Blue lobsters tend to be more aggressive because their coloring attracts predators, which may be why so few survive in the wild.

Size:  Blue lobsters have a hard outer skeleton (exoskeleton) made of a substance called chiton. This shell of the lobster must be shed periodically for the animal to grow. This process is called molting. In order to molt, the animal rolls on its side forms a V-shape and pulls out of the shell. The shell on the tail and the legs is segmented to provide flexibility needed for movement.

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Habitat and Distribution: Lobsters live on the bottom and therefore, crawl more than they swim. They have five pairs of legs with the first being modified to form large claws. The American lobster is found along the eastern coast of the United States from Labrador to New Jersey.

Diet: Mating in lobsters takes place after the female has molted. The eggs remain attached to the “swimmeretts” under the female’s abdomen until they hatch. One reason that lobsters are so expensive is that they do not reach marketable size very quickly. It takes a lobster 5 – 8 years to weigh a pound.

Reproduction:  Mating in lobsters takes place after the female has molted. The eggs remain attached to the “swimmerets” under the female’s abdomen until they hatch.

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It’s a Natural Fact: One in a million of lobsters are blue. Of course, when a blue lobster is cooked, it ends up looking just like any of its brethren, a baked orange color.  A research study conducted at the University of Connecticut, discovered that a genetic defect causes a blue lobster to produce an excessive amount of protein. The protein, and a red caratenoid molecule known as astaxanthin, push together to form a blue complex known as crustacyanin, giving the lobster its unique blue color. One reason that lobsters are so expensive, is that they do not reach marketable size quickly. It takes a lobster five to eight years to weigh a pound.  To swim, lobsters propel themselves backwards, by flips of their tail. Lobsters breathe by means of gills located in cavities on either side of their body. Water is directed over the surface of these gills by small appendages on either side of the mouth. 

Jellyfish stings

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Poke the jelly?  That’s a stingin’.

Nothing can ruin a day at the beach like a jellyfish sting. And while such attacks are common, the methods for treating them vary, and many remedies can do more harm than good.

One exception is the application of vinegar, which according to several studies can deactivate the venomous nematocysts that jellyfish release. A study published in The Medical Journal of Australia showed that removing any tentacles left by a jellyfish, then dousing an injured body part with commercial vinegar or its crucial ingredient, acetic acid, could alleviate pain and “rapidly and completely” prevent the release of more venom.

Many of the methods that do not work are also some of the best known: rubbing alcohol, ammonia, meat tenderizer and even urine — which, contrary to conventional wisdom, is not usually very acidic. Even rinsing a sting with fresh water can be a bad idea, because the change in pH between saltwater and fresh water can prompt the release of more venom. 

Today’s sea creature: octosquid

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 It’s a squid, it’s an octopus, it’s … a mystery from the deep.

What appears to be a half-squid, half-octopus specimen found off Keahole Point on the Big Island remains unidentified today and could possibly be a new species, said local biologists.

[full story]