Wailord is a huge Pokémon based on the blue whale. It has small beady eyes, a huge mouth, and a throat that is lined with grooves. It has a blue back with and four white spots, and a tan, grooved underbelly. It has two pairs of fins along its sides and a horizontal tail at the back.
When it is jumping out of the water, it makes a giant splash due to its large size. It can dive deep at 10,000 feet (3,000 meters) in one breath. It lives in the sea in large groups called pods. A pod of Wailord travels together in order to search for food, and is able to eat large quantities at one time. It is the tallest known Pokémon.
In MS009: Meanwhile, Team Rocket has ended up in the belly of a Wailord, only to be expelled into the air through the blow hole.