Blarths are medium-sized sociable beings that walk on four short legs. They have a stout body, a large head and a very long tail. They are naturally adapted to live in the swamps of Naboo, being agile and quick swimmers. They have blubber under their skin, which gives them buoyancy and insulation in the water. They use their long tail for swimming. The tail is also prehensile and has short appendages at the end, allowing the Blarth to catch prey with its tail. They can stay underwater for hours, given that they are able to absorb oxygen from the water with their skin.