Scientific name: Patiria miniata
Taxonomy: Kingdom Animalia → Phylum Echinodermata → Subphylum Asterozoa → Class Asteroidea → Subclass Ambuloasteroidea → Infraclass Neoasteroidea → Superorder Valvatacea → Order Valvatida → Family Asterinidae → Genus Patiria
Locations: Eastern Pacific
Group: Marine Life → Invertebrates → Sea Stars
Bat stars are scavengers. Usually five-armed, but can have up to nine arms. I've seen stars with as few as 4 arms and as many as 8.