Leatherback Turtle, is a sea turtle friend in Abyssrium.
To unlock Leatherback Turtle is necessary to open the Mystery Chest 50 times.
Leatherback turtle is the largest of all living turtles, with around 2.2 m (7.2 ft) and 384 kg (847 lb), they're the fourth largest living reptile losing for Orinoco crocodile, Nile crocodile, and saltwater crocodile. They have the most hidrodynamic body of all turtles with a tear-like shape, also they lack of a bony shell, hence the name. Instead, itscarapace is covered by skin and oily flesh. They're the only leathery turtle to be alive.
- In real-life leatherback turtles, are fully black, but in-game only their shell is black.