More Tropical

The feathery strands at the back of this nudibranch’s ( Chromodoris willani ) body are no mere adornment: they’re its gills! Nudibranchs, shell-less snails or sea slugs, are named for these tufted...
The Eastern cleaner-clingfish ( Cochleoceps orientalis ) has its job title in its name: “cleaner.” They prove invaluable to larger fish by removing parasites to keep the larger fish clean and healthy...
One of the first signs of a sick coral reef is seaweed creeping across the corals, stealing their precious sunny real estate. Healthy corals, however, aren't completely hopeless: in some reefs, small...
Sea stars are important members of marine ecosystems, especially in the tropics. We may think of tropical coral reefs as being home mainly to fish and corals, but in fact these habitats are home to a...
Stare at a tide pool and you will often see a crust of pink coating the bottom. No, this is not bubblegum from some careless teenager’s shoe: it’s a stony kind of seaweed that, like other seaweeds,...
There aren't any mummies or zombies buried under the seafloor: instead the ocean has its own terror from below, the bobbit worm ( Eunice aphroditois ). A couple inches wide and up to ten feet long,...
The blue-spotted stingray ( Taeniura lymma ) doesn’t like to be covered in sand like other species of stingray do. Instead, it prefers to show off its beautiful blue spots and, to stay up to the best...
Shallow water coral reefs straddle the equator worldwide. The shallow coral reefs found in U.S. territorial waters are highlighted in purple in this map. More about coral reef ecosystems can be found...
This guineafowl moray ( Gymnothorax meleagris ) is one of about 200 species of moray eels found in tropical and subtropical coral reefs . Moray eels are a type of bony fish. Many species, like this...
A rainbow of tropical fish hovers over a coral head near the Pearl and Hermes Atoll, part of the Papahānaumokuākea World Heritage Site .
We began this journey three months ago, a team of scientists and filmmakers traveling the East African coastline by boat to document and research the status of coral reefs from South Africa to Kenya...
A scuba diver explores elkhorn corals ( Acropora palmata ) growing on a tropical reef. Coral reefs provide recreation and inspiration for millions of people every year. Elkhorn coral is listed as...
The festive Christmas tree worm ( Spirobranchus giganteus ) lives on tropical coral reefs and resembles a fluffy fir tree adorned with ornaments. The multi-functional branch-like appendages are used...
Watch a recorded webcast about the latest efforts in Greece to study and save the critically endangered Mediterranean monk seal. Centuries of human exploitation and habitat destruction have caused...
Monk seals -- the only completely tropical species of seal in the world -- are in trouble. Centuries of human exploitation and habitat destruction have caused the remaining populations of...
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