The Boiler Reef Biotope
Occurs in the nearshore reefs along the southern shore of the Bermuda Islands and at the few southern utmost breaking reefs along the northern edge of the reef tract. This biotope is composed of Pleistocene eolianite rock with coralline algae, vermetid gastropods and several other encrusting organisms.
The boiler reefs contain small sediment pockets with abundant
coralline algal debris, but are relatively unimportant as sediment sources.