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5 Topic Pages Found in Marine Sciences and starting with the letter D
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River sediments deposited when a river flows into a standing body of water with no strong currents, such as a lake, lagoon, sea, or ocean. A delta is

Open diatom

( dì'ətŏm´´, –tōm´´ ), unicellular organism of the kingdom Protista , characterized by a silica shell of often intricate and beautiful sculpturing.

Open dogfish

name for a number of small sharks of several different families. Best known are the spiny dogfishes (family Squalidae) and the smooth dogfishes

Open dolphin

Any of various highly intelligent aquatic mammals of the family Delphinidae, which also includes porpoises. There are about 60 species. Most inhabit


Marine mammal Dugong dugong of the order Sirenia (sea cows), found in the Red Sea, the Indian Ocean, and western Pacific Ocean. It can grow to 3.6