Sailor's Eyeball Algae

Found singly or in groups, on hard bottoms, attached by hair-like threads, to mangroves roots, rocks, and in seagrass beds, over tidal areas of coral and rocky reefs.

This algae comprises of one single giant cell.

As many as 9000 species of algae are spread across the worlds oceans, some can be as much as 30 metres across while others are just a slippery scum over rocks.
Algae grows wherever there is enough light and life supporting conditions.
They support a huge number of marine life both for food and as a home.