Marie Read / Horned Puffin (Fratercula corniculata) flying over a pattern of kelp and sea foam, photographed from above, St. Paul, Pribilof Islands, Alaska, USA. July.

Juergen Freund / Leatherback turtle (Dermochelys coriacea) hatchlings running to the sea from nest. Jamursbamedi, West Papua, Irian Jaya, Indonesia.

Graham Eaton / Jurassic ammonite on a beach, with the Jurassic Bridport Sandstone cliffs in the background, Jurassic Coast, Burton Bradstock, Dorset, March 2012

Ole Jorgen Liodden / Fiordland crested penguin (Eudyptes pachyrhynchus) in foamy waves, Vulnerable species, Westland, New Zealand, November

Ole Jorgen Liodden / Fiordland crested penguin (Eudyptes pachyrhynchus) riding a foamy wave into the shore. Westland, New Zealand, Vulnerable species. November.

Alex Mustard / Foam on the surface of the ocean, probably caused by a algal bloom (Phaeocystis globosa) Lands End, Cornwall, England, United Kindom. British Isles. North East Atlantic Ocean

Marie Read / Tufted puffins (Fratercula cirrhata) pair flying over ocean pattern of kelp and foam, St. Paul Island, Pribilof Islands, Alaska, USA, July.

Will Watson / Naturally occurring foam in a mountain stream after heavy rainfall due to dissolved organic Carbon (DOC), Mynd Llangatwg, Brecon Beacons National Park, Breconshire, Wales, November 2018.

Gary K. Smith / Sea foam on beach, England, UK. March

Gary K. Smith / Sea foam on beach, England, UK. March

Ashley Cooper / Spume on coast of Whitehaven, Cumbria after two days of storm force winds. England, UK. January 2000

Ashley Cooper / Spume on coast of Whitehaven, Cumbria after two days of storm force winds. England, UK. January 2000