from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plankton normally living in the top hundred fathoms of a body of water (at a depth of about 180 metres or less).

from The Century Dictionary and Cyclopedia

  • n. The animals and plants which float or swim at the surface or above the hundred-fathom line, considered collectively and in contrast with the dwellers in deeper water; the pelagic plankton (which see, under plankton).


epi- +‎ plankton (Wiktionary)


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