By Michael Bright
Simply if you happen to idea IT used to be secure to return within the WATER - for those who dive into the ocean, do you ever ask yourself what is down there, underneath you, poised to take an inquisitive chew? writer of Jaws Peter Benchley and movie director Steven Spielberg definitely did, for under the waves lies a global we neither see nor comprehend; an alien international the place we're however the briefest of holiday makers. The Shark that Walks on Land uncovers stories of historic and smooth mariners, with tales of sea serpents, mermaids and mermen, sea dragons, and the genuine identification of the mythical kraken. yet this e-book comprises greater than only a medley of maritime myths and mysteries for marine biologists; it celebrates incredible discoveries by way of mixing the unknown and the commonplace in an enjoyable miscellany of evidence, figures and anecdotes in regards to the myriad creatures that inhabit the oceans. alongside the way in which we meet the giants, the main risky, the oddballs and the checklist breakers - and the shark that actually does stroll on land!
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Extra info for The Shark That Walks on Land: And Other Strange but True Tales of Mysterious Sea Creatures
Example text
It is one of the 35 jawless fish, with a skull but no backbone, and its closest known relative is the lamprey. The fossils of animals similar to modern hagfish can be found in rocks over 300 million years old, making this slimy creature a so-called ‘living fossil’. 8m (6ft) long coelacanth Latimeria is most definitely a living fossil. Fossil remains of similar fish are found in rocks more than 400 million years old and it was thought to have become extinct at the end of the Cretaceous period, about 66 million years ago.
One creature that seems to be able to keep up with billfish and even catch them is the shortfin mako Isurus oxyrinchus, the world’s fastest shark. It has been clocked at about 50km/h (31mph), with claims of even higher speeds. Accuracy is difficult to assess for the speed of marine creatures is notoriously difficult to establish, but most scientists are agreed that this species is the undisputed champion swimmer in the shark world. Like the swordfish, it is one of the sharks that maintain their swim muscles at a temperature warmer than the surrounding seawater.
Cuvier’s beaked whale The northern bottlenose whale Hyperoodon ampullatus can dive to a depth of 1,453m (4,767ft) and remain under the water for up to seventy minutes, returning to the surface relatively slowly to avoid the ‘bends’. Other species of small whales go to such depths, but the northern bottlenose whale is the only one to go deep routinely because it hunts for squid close to the seabed. Northern bottlenose whale Antarctica’s Weddell seal Leptonychotes weddellii not only has the most southerly distribution of any mammal (apart 48 from us), but it is also an accomplished diver.