Kiawah Island, SC
The sea whip (Leptogorgia virgulata) is a soft corral commonly washed up on our beaches, probably due to its tendency to live in high-salinity estuaries like ours. While this one is bright yellow, they can also be orange, magenta, red, or other colors. There are many other organisms that depend on the sea whip communities for food and shelter. A healthy sea whip community can possibly be a bioindicator for a healthy estuary.
(Source: Flickr / smickletz)