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Breadcrumb Sponge

HomeMarine InvertebratesBreadcrumb Sponge

Breadcrumb Sponge

Halichondria panicea

This sponge has a crumbly texture when out of water and can appear yellowish-green or whitish underwater. It grows in large patches, offering hiding spots for small crustaceans and worms. On Lihou’s rocky shore, you may find breadcrumb sponge under overhangs in deeper pools.

  • Habitat: Rocky shores and subtidal areas; often under ledges, on pier pilings, or around kelp holdfasts.
  • When to See: Year-round
  • Length: Encrusting patches can span 10–30 cm or more, usually up to a few cm thick