Mantine's appearance changes from that of its pre-evolution in several ways. It is larger, has wider fins, and loses its original back markings, which are replaced by two ring-shaped marks. Its coloration is also greyer, and its back is a darker blue, along with gaining a wavy outline on its wings. It gains a streamer-like tail and longer "antennae". It also possesses two pairs of gill slits on its underside. Generally, it is pictured with a Remoraid attached to its underside, much like a cleaner fish.
Unlike real-life manta rays, which can only "fly" through water, Mantine can fly in the air if they gain enough speed. They soar gracefully out of the water. Mantine are also able to naturally learn moves considered enigmatic for a Water-type Pokémon, such as Psybeam, Bullet Seed, Signal Beam and Confuse Ray. However, several of these moves can be understood if one takes into consideration the Remoraid that is attached to Mantine's wing, as it learns all of these moves with the exception of Confuse Ray.
Mantine are mostly docile. They allow Remoraid to latch onto themselves. When they build up speed, they jump out of the water.
Mantine like to live in large open seas.
This Pokémon was unavailable prior to Generation I.