Sharks

Sharks

The best known cartilaginous fish, sharks, do not chew their food; they use their razor-sharp teeth only for biting and tearing.

03:28

Biology

Keywords

shark, fish, cartilaginous fish, ocean, sea, predator, animal, gill, asymmetrical, biology

On-screen labels

cartilaginous skeleton , multiple rows of teeth, streamlined body, placoid scales, THE APEX PREDATORS OF THE SEAS, ampullae of Lorenzini, AROUND 400 SHARK SPECIES, 18 centimetres, 12 metres, 100 MILLION SHARKS ARE KILLED EVERY YEAR, slow reproduction rate
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