Remoraid are weak swimmers, instead attaching to Mantine to hitchhike across the open ocean. In return, Remoraid use their powerful water gun to snipe anything it deems a threat to its chosen Mantine.

Areas with high Mantine populations statistically also have aggressive Octillery waiting to ambush trainers. Recent studies have shown these aggressive Octillery are newly evolved, attacking Trainers to find a new partner after leaving Mantine behind.