Wailord (Japanese: ホエルオー Whaloh) is a Water-type Pokémon. It evolves from Wailmer starting at level 40.
Wailord are mammalian Pokémon that are well known as the largest Pokémon discovered so far. They are based on whales. They have small beady eyes, a huge mouth, a throat that is lined with grooves and four white spots aligned on its back. It has two pairs of fins along its side and a horizontal tail at the back. It's vaguely shaped like a torpedo or a blimp.
Despite its enormous size, it is able to breed with many land-based Pokémon that are much smaller. This is due to it being in the Field Egg Group, a reference to how whales are classified as mammals.