1974 August 151. Golden crab attempts to free a buddy from a crab trap. Experimental reefs, or casitas, help determine what factors make the best reefs. Urophycis Submarine Canyon off New England 154. Once popular tire reefs may break apart and wash up on beaches.
Artificial reefs can increase productivity of sandy bottoms.
Tagged Graysby grouper inside reef block. Clam shell bed around a thermal mound in 2800 meters. Black smoker chimney on Endeavour Ridge spouts super-heated water and chemicals. Edge of a brine pool, a super salty pond, populated by mussels at 800 meters. Tube worms living at a Gulf of Mexico hydrocarbon seep are 2 meters long.