Definitions

1. noun

The layer of water near the surface, especially the thin layer of water that contains a high concentration of microorganisms, algae, and small animals.

“The neuston sampler was used to study the unique ecosystem found in the neuston layer of the ocean.”

2. noun

A type of small aquatic animal, especially an insect or crustacean, that lives in the neuston layer.

“The neuston community was found to be an important food source for larger marine animals.”