• Seastars, brittle stars, urchins, sand dollars

• Radial symmetry
  • Larvae have bilatteral symmetry

• Hard but flexible bodies with interlocking plates under thin skin
• No head
• Tube feet use water pressure to help them move and capture food

• Herbivores and predators
• Complete digestive tract with 2 ends
• All live in the ocean

Echinoderms and Humans

Watch the video linked below (copy and paste the link)

Starfish as predators!