"Staryu's center section has an organ called the core that shines bright red. If you go to a beach towards the end of summer, the glowing cores of these Pokèmon look like the stars in the sky."
Staryu is one of the odder Pokemon in the Gen I lineup, while it's easy to say it's based off a starfish, it looks more machine-like than natural made, in fact, it's hard to tell what Staryu is made of. Plus, it can actually fly through the air as well as race through the water, making it quite a foe, and a trusted partner to Misty.
Staryu's Basic Attacks are Quick Attack and Water Gun, while its Special Attacks are Swift, Bubble Beam, and Power Gem.