from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The collection of minute or microscopic organisms that inhabit the surface layer of a body of water.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. All the organisms that live at the surface of water
And we have studies looking at organisms from sponges to sharks, looking at the food chain, both on the bottom of the ocean and also on the extreme layer of - a very thin layer called the neuston, the very surface of the ocean.