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Sinuous sea fan Eunicella tricoronata

Fast facts

  • Each polyp has eight feather-like tentacles
  • Spider crabs hide on the branches of this fan

Sea fans are related to soft corals.

They look like small trees, but they are actually colonies of animals (polyps) living together in the shape of a fan.

Each polyp has eight feathery tentacles. 

When the polyps come out to feed they give the “branches” a fuzzy appearance.

Sinuous sea fans are flattened with all the “branches” on the same plane.

Small spider crabs can often be spotted hiding among the branches.