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Pacific blue-fin tuna

How warm-bodied tuna hearts keep pumping in killer cold

When tunas dive down to cold depths their body temperature stays warm but their heart temperature can fall by 15 degrees within minutes. The heart is chilled because it receives blood directly from the gills which mirrors water temperature. This clearly imposes stress upon the heart but it keeps beating, despite the temperature change. In most other animals the heart would stop.

Review: On-Line Coral Reef Course

Beautiful OceansCoral Reef Ecosystem & Food Web Course$59.55http://www.beautifuloceans.com/This new course for divers discusses the coral reef ecosystem and food web. It illustrates its points...
Yellowfin Tuna

Tuna Industry calls for cut in Yellowfin Catch

Tuna companies and supermarkets have joined WWF in calling for better regulation of tuna fishing within the Indian Ocean. In a letter signed by...

No sunglasses required for fish supper

Fishermen are always looking for a tasty catch - but it is the fish that have a natural advantage when it comes to spotting...
Mauve Stinger Jellyfish, Pelagia noctiluca, by Andrew Reay-Robinson

Killer Robots Slash Jellyfish

Korean researchers test jellyfish-killing robots. Jellyfish cause the fishing industry to lose money by breaking fishing nets. They sting swimmers. They block the seawater cooling systems of power plants. In 2009, a ten-ton Japanese trawler capsized after the three man crew tried to haul up a net loaded with jellyfish. But does chopping millions of jellyfish up solve the problems?
Whale shark by Tim Nicholson

Whale sharks added to endangered species Red List

Whale sharks and slender hammerheads are nearer extinction due to human actions.
Basking shark, Cetorhinus maximus

Basking shark mystery solved

Once thought of as a strictly cool-water species, basking sharks migrate to tropical waters each winter, according to research published in the June 2009...

One Third of Reef-Building Corals Face Extinction

One third of reef-building corals around the world are threatened with extinction, according to the first-ever comprehensive global assessment to determine their conservation status....
Killer Whale

Several species of Killer Whale, scientist say

It has long been thought that there were several types of killer whales. Now scientists are recommending that at least three be reclassified as separate species.
loggerhead turtle

Baby Turtles and FlipperBot Show How to Walk on Sand

For turtle hatchlings struggling to reach the sea, success may depend on having flexible wrists that allow them to move without disturbing too much...