Photo of Animalia: species: Hydnophora rigida (Lizard Island Field Guide)

Hydnophora rigida in the Lizard Island lagoon near Palfrey Island.

Photo identified by Dr Zoe Richards who notes, "Bases of the branches are pretty thick and resemble Hydnophora grandis but based on the low monticules and slight fusing of monticules on the branch tips, I am calling it Hydnophora rigida."

© Anne Hoggett