The Right Blue

by B. N. Sullivan This Brown Tube Sponge ( Agelas conifera ) is a fairly common sight on walls and reef canyons in the Caribbean region, ...

by B. N. Sullivan The Row Pore Rope Sponge ( Aplysina cauliformis ) is a Caribbean species.  Its common name describes it well.  It grows...

by B. N. Sullivan We've posted several articles about a nasty ocean environmental issue: marine debris.  Since this is one of our pet ...

by B. N. Sullivan Fishes in the Butterflyfish family ( Chaetodontidae ) are among the prettiest inhabitants of tropical reefs around the w...