Espen Bergersen / Gulls (Laridae) seaching for food in water containing blood coming from a large fishing boat, Tromvik, Kvaloya, Troms, Norway, November 2014.

Georgette Douwma / Stove-pipe sponge (Aplysina archeri) Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Stove-pipe sponge (Aplysina archeri) and Orange elephant ear sponge (Agelas clathrodes) Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

David Pattyn / Hanuman langur / Northern Plains Grey Langur (Semnopithecus entellus) drinking from a water tap at Ranthambore fort. Ranthambore National Park, Rajasthan, India.

Alex Mustard,Alex Mustard / A nudibranch (Flabellina nobilis) feeding on a solitary hydroid (Tubularia indivisa), note how the hydroid is bent back as it is pulled into the nudibranch's mouth. Gulen, Bergen, Norway. North East A...

Terry Whittaker,Terry Whittaker / Water Vole (Arvicola amphibius) emerging from pipe at side of river, Kent, UK, December

Ross Hoddinott / Water Vole (Arvicola terrestris) in terracotta pipe by water's edge. Captive. Devon, UK. April 2010.

Stephen Dalton / Brown rat (Rattus norvegious) silhoutted in sewage piping, UK, controlled conditions

Stephen Dalton / Brown rat {Rattus norvegicus} emerging from drainpipe, UK

Andy Sands / Brown rat (Rattus norvegicus) looking out from old pipe, captive, UK, April

Jim Brandenburg / Purple rock is catlinite or pipestone used by Native Americans to make the peace pipe, Pipestone Creek, Pipestone National Monument, Minnesota

Sergio Hanquet / Controlled discharge of treated water from pipe, surrounded by shoal of fish. Atlantic ocean, 2019.