Plant
Algae comprise several different groups of organisms which produce food by photosynthesis and thus have traditionally been included in the plant kingdom. The seaweeds range from large multicellular algae to single-celled organisms and are classified into three groups, the brown, red and green algae. There is good evidence that the brown algae evolved independently from the others, from non-photosynthetic ancestors that formed endosymbiotic relationships with red algae rather than from cyanobacteria, and they are no longer classified as plants as defined here.
Seaweed blenny
The seaweed blenny is native to shallow waters in the western Atlantic Ocean. Its range extends from New York southwards to Brazil, and includes the Caribbean Sea, the Gulf of Mexico, Bermuda and the Bahamas at depths down to about . A typical habitat is among limestone boulders and in scoops and basins where the rock surface is covered with a mat of algae, sea fans and other invertebrates. It is also found on reefs, in seagrass meadows and oyster beds, as well as around man-made structures such as pilings, jetties, seawalls, oil rigs and buoys, and among the roots of mangroves.