Pokémon Staryu

Staryu in the center of the body has an organ called the nucleus, which shines a bright red light. If you come to the beach at the end of summer, you will see the luminous cores of these Pokémon, which look like stars in the sky.

Staryu apparently communicates with stars in the night sky, flashing a red core in the center of his body. Pokemon is not afraid to lose any part of its body, as it is able to easily grow a new one, regenerating it.