What at first appears to be a red pearl within the hard, spiky shells of these Pokémon is, in fact, their sensitive core. They have learned to use their own core to lure in prey and then clamp down on them until they stop struggling.
A Starperl slams its shell closed on prey to prevent escape. People in ancient times imagined that Starperl were transformed from the reflections of stars that twinkled on gentle waves at night.
