The world of animals is still full of secrets. Some facts are so surprising that many ... In fact, it is a species of ocean dolphin that is often mistaken with killer whales.

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Corals are animals, but many are powered by the tiny ... Single reefs here hold four times as many species as the entire Atlantic Ocean. All the planet's richest reefs lie within the "Coral ...

They are primarily a northern species that inhabits boreal forests and can also range as far north as the shores of the Arctic Ocean ... These animals are nimble and fast, which is fortunate ...