Alex Mustard / Grooved brain coral (Diploria labyrinthiformis) at night with polyps extended to feed, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.

Alex Mustard / Boulder brain coral (Colpophyllia natans) photographed with a long exposure with camera rotation. Taken with circular fisheye lens. Grand Cayman, Cayman Islands. Caribbean Sea.

Juergen Freund / Fluorescent corals (Trachyphyllia geoffroyi) Great Barrier Reef, Australia

Alex Mustard / Brain coral (Pseudodiploria strigosa) photographed under blue light to excite the fluorescence, Little Cayman, Cayman Islands, British West Indies, Caribbean Sea.

John MacPherson / 2020VISION / Bottlenose dolphin (Tursiops truncatus) mother and calf breaking surface, Moray Firth, Scotland, UK, June 2011. Did you know? Dolphins can swim to the surface to breathe even when sleeping, as they ca...

Juergen Freund / Large round Brain coral (Platygyra lamellina) on coral reef, North Sulawesi, Indonesia.

Juergen Freund / Large round Brain coral (Platygyra lamellina) on coral reef, North Sulawesi, Indonesia.

Juergen Freund / Coral reefs exposed by the April 2nd 2007 earthquake that lifted the island of Ranongga by 3m, Solomon Islands, Pacific, July 2010.

Juergen Freund / Coral reefs exposed by the April 2nd 2007 earthquake that lifted the island of Ranongga by 3m, Solomon Islands, Pacific, July 2010.

Juergen Freund / Hard brain coral (Platygyra sp) half covered with a pink algae, Moluccas Islands, Indo-pacific

Tim Laman / Split level of roots of Red mangrove {Rhizophora mangle} supporting rich invertebrate life, Brain coral and Silversides fish in the Belize Cays, Tunicate Cove, Belize.

Tim Laman / Split level of Brain coral growing around the underwater portions of Red mangrove roots {Rhizophora mangle} on offshore mangrove island, Tunicate Cove, Belize.

Doug Perrine / Wrasse blenny {Hemiemblemaria simulus} in giant brain coral, Bahamas, mimics cleaning wrasse

Juergen Freund / Arrow crab on brain coral {Stenorhynchus seticornis} Caribbean Sea, Cuba

Doug Perrine / Giant brain coral provides shelter for Grunts and Squirrelfish, Florida Keys, USA.

Michael Pitts / Brain coral on coral reef Great Barrier Reef, Australia.

Doug Perrine / Queen angelfish {Holacanthus ciliaris} over brain coral, Cayman Islands, Caribbean Sea, Atlantic Ocean (Non-ex).

Jeff Rotman / Close up of Brain coral {Diplora strigosa} Caribbean

Juergen Freund / Brain coral (Diploria labyrinthiformis). Caribbean

Juergen Freund / Diver on coral reef near Brain coral, Caribbean

Shane Gross / Marine biologist measuring Brain coral (Colpophyllia natans), ongoing program to monitor and restore coral reefs in The Bahamas. Eleuthera, Bahamas. 2017.

Pascal Kobeh / Symmetrical brain coral (Diploria sp), close up, in coral reef with many fish. Flores Sea, Indonesia.

Magnus Lundgren / Wild Wonders of China / Brain coral, Green Island, a small volcanic island in the Pacific Ocean, Taiwan

Gary Bell/ Oceanwide / Blue-striped Blenny (Plagiotremus rhinorhynchos) in brain coral, Great Barrier Reef, Australia

David Fleetham / Detail of Brain Coral (Colpophyllia). Bonaire, Netherland Antilles, Caribbean.

Linda Pitkin / Yellow goatfish (Mulloidichthys martinicus), by Grooved brain coral (Diploria labyrinthiformis) Bonaire: Captain Don's Habitat, House Reef, February

Alex Mustard / Brain coral (Platygyra daedalea) beneath a breaking storm wave, on a coral reef. Sha'ab Claudia, Fury Shoal, Egypt. Red Sea

ZSSD / Jaguar (Panthera onca) female licking brain-shaped ice enrichment, San Diego Zoo

Ingo Arndt / Scientists implanting wires in the brain of a Desert locust (Schistocerca gregaria) to measure brain activity. University of Marburg, Germany. November 2013.

Ingo Arndt / Scientists implanting wires in the brain of a Desert locust (Schistocerca gregaria) to measure brain activity. University of Marburg, Germany. November 2013.

Doug Wechsler / Leafy Brain / Brown witches butter (Tremella foliacea) on branch, Fort Washington State Park, Pennsylvania, USA

Alex Mustard / Boulder brain coral (Colpophyllia natans) bleached and growing on a coral reef, East End, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.

Nick Upton / Samantha Pickering providing a bowl of mealworms for a long-term resident brain-damaged Noctule bat (Nyctalus noctula) "Nico" in a bat box also accessible to other bats using the flight cage behind th...

Nick Upton / Long-term resident brain-damaged Noctule bat (Nyctalus noctula) "Nico", held in a hand, North Devon Bat Care, Barnstaple, Devon, UK, June 2016. Model released

Nick Upton / Samantha Pickering providing a bowl of mealworms for a long-term resident brain-damaged Noctule bat (Nyctalus noctula) "Nico" in a bat box also accessible to other bats using the flight cage behind th...

Stephen Dalton / Yellow brain (Tremella mesenterica) on Hazel. Sussex, UK

Georgette Douwma / Open / Folded brain coral (Trachyphyllia geoffroyi) The vivid colours are caused by zooxanthellae. Lembeh Strait, Sulawesi, Indonesia.

Georgette Douwma / Open / Folded brain coral (Trachyphyllia geoffroyi) The vivid colours are caused by zooxanthellae. Lembeh Strait, Sulawesi, Indonesia.

Georgette Douwma / Open / Folded brain coral (Trachyphyllia geoffroyi) The vivid colours are caused by zooxanthellae. Lembeh Strait, Sulawesi, Indonesia.

Adrian Davies / Fossilised Grooved brain coral (Diploria labyrinthiformis) Barbados.

Adrian Davies / Fossilised Grooved brain coral (Diploria labyrinthiformis). Barbados.

Adrian Davies / Fossilised Grooved brain coral (Diploria labyrinthiformis). Barbados.

Nick Upton / Ray, a brain damaged adult male Grey seal (Halichoerus grypus) resting by a convalescence pool where he is a long-term resident, Cornish Seal Sanctuary, Gweek, Cornwall, UK, January.

Nick Upton / Dan Jarvis giving 'Ray', a brain damaged adult male Grey seal (Halichoerus grypus) a rub with a broom at the Cornish Seal Sanctuary where he is a long term resident alongside recovering pups, Gweek, C...

Nick Upton / Dan Jarvis giving 'Ray' a brain damaged adult male Grey seal (Halichoerus grypus) a rub with a broom at the Cornish Seal Sanctuary. Gweek, Cornwall, UK, November. Model released.

Alex Mustard / Cleaner goby (Elacatinus genie) waiting for fish on a brain coral. North Wall, Grand Cayman, Cayman Islands. Caribbean Sea.

Alex Mustard / Secretary blenny (Acanthemblemaria maria) dominant male in hole of Boulder brain coral (Colpophyllia natans) East End, Grand Cayman, Cayman Islands. Caribbean Sea.

Pete Oxford / Brain Coral (Diploria labyrinthiformis), Banco Chinchorro, Yucatan Peninsula, Mexico

Georgette Douwma / Coral reef scenery with Orange elephant ear sponges (Agelas clathrodes), Stove-pipe sponge (Aplysina archeri) and Boulder brain coral (Colpophyllia natans) Bonaire, Netherlands Antilles, Caribbean, A...

Alex Hyde / Yellow Brain Fungus (Tremella mesenterica), Lake District National Park, Cumbria, UK. February.

Pascal Kobeh / Brain coral (Diploria labyrinthiformis) Guadeloupe Island, Mexico. Caribbean.

Pascal Kobeh / Brain coral (Diploria labyrinthiformis) with diver, Guadeloupe Island, Mexico. Caribbean. August 2012.

Pascal Kobeh / Honeycomb moray (Gymnothorax favagineus) out of its burrow / its hole close to a brain coral (Platygyra lamellina) with another one behind it, Daymaniyat islands, Oman. Gulf of Oman.

Pete Oxford / Coral (Montastraea sp), Koro Island, Fiji

Floris van Breugel / Brain corals (Faviidae) in the tropical lagoons of Ofu Island, American Samoa Archipelago, American Samoa National Park. January 2012.

John Waters / Golden jelly fungus (Tremella mesenterica) growing on branches of Gorse bush (Ulex europaeus) amid scrub vegetation and pasture, near coast of North Devon, UK, January 2014.

Solvin Zankl / Diploastrea brain / Honeycomb coral (Diploastrea heliopora) with closed polyps, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Solvin Zankl / Brain coral (Leptoria phrygia) Raja Ampat, West Papua, Indonesia, Pacific Ocean

Michael Pitts / Corals (Acropora) with brain corals (Faviidae) protruding. Karan Island, Saudi Arabia sector of the Arabian gulf.

Michael Pitts / Corals (Acropora) with brain corals (Faviidae) protruding. Karan Island, Saudi Arabia sector of the Arabian gulf

Stephen Dalton / Ant infected by entomopathogenic fungus, which has taken over the brain of the ant, Florida, USA, February.

Floris van Breugel / Brain corals (Faviidae) off the shores of Ofu island, American Samoa, South Pacific.

Ingo Arndt / Stony Coral (Favia sp)

Ingo Arndt / Brain Coral (Goniastrea sp) detail

Ingo Arndt / Lesser Valley Coral (Platygyra daedalea) from the Red Sea, Collection Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Knob Coral (Favia favus) from Red Sea, Meeresmuseum Ozeania, Riedenburg, Germany

Juergen Freund / Thick-skinned Sea Star (Echinaster callosus) on brain coral, Raja Ampat, West Papua, Indonesia

Franco Banfi / Close up detail of Brain coral (Diploria genus) Maldives, Indian Ocean

Alex Mustard / A Grooved brain coral (Diploria labyrinthiformis) spawning at night, releasing pink and white bundles of eggs and sperm from the polyps within its grooves, East End, Grand Cayman, Cayman Islands, Brit...

Alex Mustard / Two Ruby brittlestars (Ophioderma rubicundum) climbing a Symmeterical brain coral (Pseudodiploria strigosa) as it spawns at night in order to feed on the coral eggs, East End, Grand Cayman, Cayman Isl...

Alex Mustard / A Ruby brittle star (Ophioderma rubicundum) feeding on the spawn from a Symmeterical brain coral (Pseudodiploria strigosa), East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Mustard / A Symmeterical brain coral (Pseudodiploria strigosa) spawning at night, releasing pink and white bundles of eggs and sperm from the polyps within its grooves, East End, Grand Cayman, Cayman Islands, B...

Alex Mustard / A Symmeterical brain coral (Pseudodiploria strigosa) spawning at night, releasing pink and white bundles of eggs and sperm from the polyps within its grooves, East End, Grand Cayman, Cayman Islands, B...

Alex Mustard / A Symmeterical brain coral (Pseudodiploria strigosa) spawning at night, releasing pink and white bundles of eggs and sperm from the polyps within its grooves, East End, Grand Cayman, Cayman Islands, B...

Alex Mustard / A Symmetrical brain coral (Pseudodiploria strigosa) preparing to spawn at night, showing the bundles of eggs and sperm within the polyps prior to their synchronous release, with a Triplefin (Helcogram...

Alex Mustard / A Symmeterical brain coral (Pseudodiploria strigosa) preparing to spawn at night, with one gamete bundle beginning to be released, East End, Grand Cayman, Cayman Islands, British West Indies, Caribbea...

Alex Mustard / Two photos of a Symmeterical brain coral (Pseudodiploria strigosa) spawning at night, showing views before and during the release of the gamete bundles, East End, Grand Cayman, Cayman Islands, British...

Alex Mustard / A Symmeterical brain coral (Pseudodiploria strigosa) preparing to spawn at night, with one gamete bundle beginning to be released, East End, Grand Cayman, Cayman Islands, British West Indies, Caribbea...

Alex Mustard / A Symmeterical brain coral (Pseudodiploria strigosa) spawning at night by releasing pink and white bundles of eggs and sperm from its polyps, East End, Grand Cayman, Cayman Islands, British West Indie...

Alex Mustard / Three Ruby brittlestars (Ophioderma rubicundum) climbing a Symmeterical brain coral (Pseudodiploria strigosa) as it spawns at night in late summer. East End, Grand Cayman, Cayman Islands, British West...

Alex Mustard / Brain coral (Pseudodiploria strigosa) poylps capturing a planktonic worm, photographed under blue light to excite the fluorescence. The coral polyps glow green and the worm glows orange. The coral pol...

Alex Mustard / Brain coral (Pseudodiploria strigosa) close focus wide angle view. Photograph is not digital manipulated, but taken with a fisheye lens placed very close to the coral with flashes aimed to illuminate...

Alex Mustard / Secretary blenny (Acanthemblemaria maria) peering out of a boulder brain coral (Colpophyllia natans) East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Mustard / Secretary blenny (Acanthemblemaria maria) peeking out of a boulder brain coral (Colpophyllia natans) East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Mustard / Grooved brain coral (Diploria labyrinthiformis) close focus wide angle view, East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Mustard / Brain coral (Colpophyllia natans) showing healthy coral, unmanipulated image. East End, Grand Cayman, Cayman Islands. British West Indies. Caribbean Sea.

Alex Mustard / Brain coral (Colpophyllia natans) probably suffering from white band disease, East End, Grand Cayman, Cayman Islands. British West Indies, Caribbean Sea, January 2010.

Alex Mustard / Brain coral (Colpophyllia natans) bleached, polyps have expelled their zooxanthellae symbiotic algae from their tissue, probably as a result of being stressed by a rise in sea temperature, East End,...

Alex Mustard / Secretary blenny (Acanthemblemaria maria) living in a tube within Boulder brain coral (Colpophyllia natans). Photo illuminated with a single flash, with restricted beam to create hard lighting. East E...

Alex Mustard / Grooved brain coral (Diploria labyrinthiformis) close up view, East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Mustard / Brain coral (Pseudodiploria strigosa) colony spawning at night in late summer, bundles of eggs and sperm slowly being released from the polyps, East End, Grand Cayman, Cayman Islands, British West Ind...

Solvin Zankl / Using fine electrodes to measure brain activity in Common fruit fly (Drosophila melanogaster) at the Vienna Drosophila RNAi Center, Institute for Molecular Pathology, Austria.

Pete Oxford / Yellownose goby (Elacatinus randalli) in Grooved brain coral (Diploria labyrinthiformis) Bonaire, Netherlands Antilles, Caribbean