The shell of Hawaiian reef lobster (Enoplometopus occidentalis), covered in algae and parasitic barnacles, Hawaii, United States of America, Pacific, North America

A garibaldi (Hypsypops rubicundus) in a forest of giant kelp off Catalina Island, California, United States of America, North America

El Tatio geyser basin on altiplano, boiling pool with algal colour zoning, Atacama Desert, Chile, South America

Salt and algal deposits at Lake Clifton, one of a string of coastal lakes south of Mandurah, Yalgorup National Park, Mandurah, Western Australia, Australia, Pacific

Algal turf growth after Sea Empress oil spill, Pembrokeshire (rr)

Algal turf growth after Sea Empress oil spill, Pembrokeshire (rr)

50 Diatom Species, Photomicrograph

Aerial view, Kemnade reservoir with algal bloom, Hattingen, Ruhr Area, North Rhine-Westphalia, Germany, Europe

Macro algal seaweed, Caulerpa prolifera, Croatia, Istria, Mediterranean Sea

parallel rock formations on sea shore in tidal zone of sea outdoors La Rasa Mareal flysch cliffs algae alga algal growth Basque Country Spain Europe

parallel rock formations on sea shore in tidal zone of sea outdoors La Rasa Mareal flysch cliffs algae alga algal growth Basque Country Spain Europe

parallel rock formations on sea shore in tidal zone of sea outdoors La Rasa Mareal flysch cliffs algae alga algal growth Basque Country Spain Europe