Algae covered rocks at Tregardock Beach, North Cornwall, England, United Kingdom, Europe

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

Algae covered rocks at sunrise at Church Ope Cove, Portland, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Algae covered pebbles at Church Ope Cove at dawn Portland, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Trees covered by orange trentepohlia, Waiotapu Thermal Area, Rotorua, North Island, New Zealand, Pacific

Red and green algae-covered snow on Petermann Island, Antarctica, Southern Ocean, Polar Regions

A rocky shoreline covered with clusters of blue-black mussels. The mussels cling tightly to the rocks, creating a textured surface. Some green algae is visible in the water pools among the rocks, reflecting sunlight.

Seaweed covered rocks and hanging fishing nets at low tide, west Senja, Norway, Scandinavia, Europe

Tropical fern above algae covered pond

Common Starfish (Asterias rubens), two common starfish grazing on algae covered dark red rock, Eyemouth, Scotland, UK North Sea

Jourdan's turban (turbo jourdani) large gastropod shell, reddish-brown, Rottnest Island reef, wild, day, marine protected area, free-diving off, cool temperate waters of Western Australia. MORE INFO: Marine plant common kelp, a dominant feature of the underwater landscape. Protected areas are covered in lush growth of diverse algae, also red algea are here.

Red and green algae-covered snow on Petermann Island, Antarctica, Southern Ocean

Short-tailed pipefish, Trachyrhamphus bicoarctatus, fluorescing. A pipefish is covered by algae which is fluorescing under blue light. Buyat Bay, North Sulawesi, Indonesia, Pacific Ocean.

Common Starfish (Asterias rubens), two common starfish grazing on algae covered dark red rock, Eyemouth, Scotland, UK North Sea

Common Starfish (Asterias rubens), common starfish grazing on algae covered dark red rock, Eyemouth, Scotland, UK North Sea

Algae covered pebbles on the beach at night, Ponta do Sol, Madeira, Portugal

Algae-covered rocks at low tide and houses in the Seatown area of Gardenstown, Banffshire, Scotland, United Kingdom, Europe

Algae-covered rocks at low tide and houses in the Seatown area of Gardenstown, Banffshire, Scotland, United Kingdom, Europe

Evening mood at Skagsanden, beach near Flakstad, Flakstadsoya, Lofoten Islands, Nordland, Norway, Europe

Evening mood at Skagsanden, beach near Flakstad, Flakstadsoya, Lofoten Islands, Nordland, Norway, Europe

Groynes covered in algae, Rantum Beach, Sylt, North Frisian Islands, North Frisia, Schleswig-Holstein, Germany, Europe

Evening mood at Skagsanden, beach near Flakstad, Flakstadsoya, Lofoten Islands, Nordland, Norway, Europe

Siberian Tiger (Panthera tigris altaica) standing in algae-covered water

Stones with algae in the Baltic sea near the Island of Ruegen

An Old Stairway On The Astoria Riverfront That Leads Into The Water, Astoria, Oregon, United States Of America

Large Algae Covered Letters Along The River Thames Bank, Bankside, London, England

This red encrusting sponge (Clathria sp.) is the most common of this family found in Hawaii. Here it has covered the calcium carbonate-producing seaweed, Halimeda kanaloana, Hawaii, United States of America

Algae-covered breakers in the Baltic Sea near Bansin, Usedom