A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The seahorse is the only fish to have a neck.
12
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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