Spicule Images: a) Styles II; b) heads and tips of styles; c) oxea II, the most common; d) oxea I; e) ends of oxea II; f) rare styles I; g) acanthomicroxea. Sample from the Bahamas.
Tissue Images: a) Longitudinal section of the body; b) magnification at the surface; c) magnification of the choanosome. Sample from the Bahamas.