>Tenerife, Canary Islands, Spain
>By Eduardo Acevedo
is a venomous pelagic nudibranch that lives on the ocean's surface and can be found all over the world, often in proximity to its prey, which includes Portuguese man-of-wars and other pelagic cnidarians as well as their own species if food is scarce. It took me nearly eight hours to find these inch-long specimens, which may have been mating or fighting, and another two hours to get the picture. Macro photography in the open ocean requires a calm sea and lots of patience.
>Canon EOS 5D Mark II, Canon EF 100mm lens, 1/200 sec @ f/29, ISO 100, Inon Z-240 strobes (2), Seacam housing