Photo of Animalia: Barrel Sponge (species: Xestospongia testudinaria) (Lizard Island Field Guide)

Photo of Animalia: Barrel Sponge (species: Xestospongia testudinaria) (Lizard Island Field Guide)

Photo of Animalia: Barrel Sponge (species: Xestospongia testudinaria)

Barrel Sponge at Lizard Island. External diameter about 70 cm.
© Anne Hoggett

Usage licence: Creative Commons Attribution 3.0 Unported License