Reefs

Coral Knobs

Coral knobs are the smallest elements of Bermuda's reefs. They are intergrowths of coral, algae, and associated organisms of up to 5 m across and rise up 1 to 3 m above the surrounding sand-floored interareas. Coral knobs are dominantly Montastrea spp., Diploria spp. and Porites astreoides.