Archives for posts with tag: ocean

A blind crustacean that lives in underwater caves uses venom to liquify its prey. This is the first venomous crustacean discovered.

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Measurements from NASA’s Cassini spacecraft, based on the flexing of its surface, suggest that there is a ocean 100 km below the icy surface of Saturn’s moon, Titan. It only rains on Titan one every thousand years.

Read the paper in Science.

The bellies of pygmy sharks glow in the dark (bioluminescence) – this makes it harder for predators to spot them from below, because they blend into the brighter light from the ocean surface.  This is controlled by two hormones, melatonin and prolactin.

Read the research in the Journal of Experimental Biology.

False killer whales can turn down their hearing when they anticipate loud noises – this protects their very sensitive ears from damage. This may have developed to protect themselves from the clicks and buzzes they make in echolocation, and could be used to help them cope with the loud sounds in the ocean made by humans.

Researchers have invented a robot jellyfish, fueled by hydrogen, that could one day be used for ocean rescues. The vehicle, called Robojelly, uses shape memory alloys – metals that ‘remember’ their shape.

A type of plankton, called copepods, leap out of the surface of the ocean to avoid being eaten by fish. These tiny and brightly-coloured shrimp-like animals live just under the surface of the sea and can ‘fly’ 10 to 20 times the length of their body.

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