How does starfish obtain there energy?

Starfish obtain their energy primarily through a diet of bivalves, snails, and other small marine organisms. They use their tube feet to pry open the shells of their prey and can evert their stomachs to digest food externally before absorbing the nutrients. This unique feeding method allows them to access energy from organisms that are often difficult to consume whole. Additionally, some starfish also engage in scavenging and can derive energy from decaying organic matter.