Amazing animals — A look at the weird and wonderful species that live on our planet

Giant phantom jellies were discovered in 1899 and since then have only been spotted around 120 times.

Common degus clean themselves and communicate with urine, and they can detach their own tails to escape predators.

Turkey vultures feed on dead carcasses, helping to lower greenhouse gas emissions.

The skin of dwarf crocodiles found living in a cave in Gabon is turning orange from swimming in guano. It's unclear how long they've been down there, but genetic research indicates they may be morphing into a new species.

The newly discovered tarantula Trichopelma grande has unusually hairy legs for a ground-dwelling species. It's also much bigger than its relatives — and scientists aren't sure why.

Known for its uncanny resemblance to the TV character Shaun the Sheep, this adorable sea slug munches on algae to steal its ability to photosynthesize and become solar-powered.

Marine otters live on rocky coasts with extreme swells and strong winds, with their dens built into crevices and caves.

Turuchan pikas play all sorts of games, including swinging from branches, throwing food around and hiding them jumping out at each other.

This bright green sea creature contains a toxic pigment that protects it from predators, kills bacteria and determines the sex of larvae, turning males into a "living testacle."

These leathery turtles spend most of their lives buried motionless in river mud, but burst into action to catch their unsuspecting prey.