Puffer fish are generally believed to be the second–most poisonous vertebrate in the world, after the Golden Poison Frog.
Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills.
At 31,900 species, fish exhibit greater species diversity than any other class of vertebrates.
A jellyfish does not have a brain or central nervous system, but rather has a loose network of nerves.
Corals can catch small fish and animals such as plankton using stinging cells on their tentacles.
Crabs are mostly active animals with complex behaviour patterns. They can communicate by drumming or waving their pincers.
Seahorses swim very poorly by using a dorsal fin. Since they are poor swimmers, they are most likely to be found resting, with their prehensile tails wound around a stationary object.
The earliest known turtles date from 215 million years ago, making turtles one of the oldest reptile groups and a more ancient group than lizards, snakes and crocodiles.
Fish derive many benefits from shoaling behaviour including defence against predators, through better predator detection, and by diluting the chance of individual capture.
Puffer fish are generally believed to be the second–most poisonous vertebrate in the world, after the Golden Poison Frog.
Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills.
At 31,900 species, fish exhibit greater species diversity than any other class of vertebrates.
A jellyfish does not have a brain or central nervous system, but rather has a loose network of nerves.
Corals can catch small fish and animals such as plankton using stinging cells on their tentacles.
Crabs are mostly active animals with complex behaviour patterns. They can communicate by drumming or waving their pincers.
Seahorses swim very poorly by using a dorsal fin. Since they are poor swimmers, they are most likely to be found resting, with their prehensile tails wound around a stationary object.
The earliest known turtles date from 215 million years ago, making turtles one of the oldest reptile groups and a more ancient group than lizards, snakes and crocodiles.
Fish derive many benefits from shoaling behaviour including defence against predators, through better predator detection, and by diluting the chance of individual capture.
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