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Narcosis results from breathing gases under elevated pressure, and may be classified by the principal gas involved. The noble gases, except helium and probably neon, [2] as well as nitrogen, oxygen and hydrogen cause a decrement in mental function, but their effect on psychomotor function (processes affecting the coordination of sensory or cognitive processes and motor activity) varies widely.
They also get stains/spots on their neural arches, and the number of stains increase as they get older. [5] Its pupils are black and its eye color is a fluorescent blue-green. The bluntnose sixgill shark can grow to 5.5 m (18 ft),. [6] A work from the 1880s stated that a bluntnose sixgill shark caught off Portugal in 1846 measured 8 m (26 ft).
Shark attacks capture a disproportionate share of public attention, given their rarity (cows kill more people annually). Historian of marine science Samantha Muka, of Stevens Institute of ...
A shark can sense a turtle, octopus or other prey from up to 20m away. In one experiment, a scientist plugged one of a shark's nostrils. It swam around in a circle. Shark brains aren’t round like a human's; they are long and narrow. If sharks don’t keep on swimming they sink to the seabed. A typical shark has several hundred teeth at any ...
How can you stay safe (and avoid shark encounters) at the beach? Once you arrive at the beach and set up those chairs and umbrellas, Kinsler says to take a look around. "You really need to be ...
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The shortfin mako shark, the fastest shark and one of the fastest fish, can burst at speeds up to 50 kilometres per hour (31 mph). [87] The great white shark is also capable of speed bursts. These exceptions may be due to the warm-blooded, or homeothermic, nature of these sharks' physiology. Sharks can travel 70 to 80 km in a day. [88]
Can't get enough of ABC's new series Shark Tank? Then dive deeper. WalletPop's Editor-at-Large, Jason Cochran, dared to risk life and limb to hang with the Sharks. Instead of seeking an audience ...