Suggested Searches

In this underwater shot, a few strands of a brownish-yellow algae floats in teal blue water. The algae looks like miniature seaweed, with little leaves and tiny balls.

Underwater Sargassum

A clump of sargassum - an invasive species of algae - floats along in the current off the short of La Parguera, Puerto Rico.

Image Credit: NASA/Milan Loiacono
Download