Alex Mustard / Remoras (Remora sp.) hitchhiking on the tail of a large (13-15m) female whale shark (Rhincodon typus) swims in open water. Wolf Island, Galapagos National Park, Galapagos Islands. East Pacific Ocean.

Franco Banfi / Sperm whale (Physeter macrocephalus) portrait, with remora fish, Dominica, Caribbean Sea, Atlantic Ocean, Vulnerable.

Jordi Chias / Giant Manta (Manta birostris) with Remoras (Remora brachyptera) attached to both wings, offshore Santa Maria Island, Azores, Atlantic Ocean

Jordi Chias / Mobula / Chilean devil ray (Mobula tarapacana) with remora (Remora brachyptera) and Amberjacks (Serila dumerilli) Santa Maria Island, Azores, Atlantic Ocean

Georgette Douwma / Green turtle (Chelonia mydas) with two large remoras (Echeneis naucrates) attached to its carapace, at rest on artificial reef. Mabul, Malaysia.

Brandon Cole / Whale shark (Rhincodon typus) feeding on fish eggs, near surface, with remora (Remora sp) attached to inside of the mouth, Gulf of Mexico, Mexico, Caribbean Sea.

Michael Pitts / Mike de Gruy, underwater camerman, in Remora submersible, Mediterranean

Nuno Sa / Whale Shark (Rhincodon typus) accompanied by Pilot Fish (Naucrates ductor) and Remora. The biggest fish in the world has only started to visit the Azores in the past three years due to water temperatu...

Nuno Sa / Manta Ray (Manta Birostris) and Devil Ray (Mobula tarapacana) in background, accompanied by Pilot Fish (Naucrates ductor) and Remora. Santa Maria Island, Azores, September.

Brandon Cole / Tiger Shark (Galeocerdo cuvier) and Remora fish. Bahamas, Atlantic Ocean, July.

Brandon Cole / Caribbean Reef Shark (Carcharhinus perezi) with a Remora. Bahamas, Atlantic Ocean, July.

Alex Mustard / Giant Pacific Manta Ray (Manta birostris) portrait with Remora fish (Echeneididae) Roca Partida, Revillagigedos Islands, Mexico. East Pacific Ocean. February

Alex Mustard / Lemon shark (Negaprion brevirostris) accompanied by Remoras (Echeneis naucrates) at night. Little Bahama Bank, Bahamas. Tropical West Atlantic Ocean.

Doug Allan / Humpback whale (Megaptera novaeangliae) mother and calf, female with Remoras on underside, Vava'u, Kingdom of Tonga, South Pacific, September. Not available for ringtone/wallpaper use.

Luis Quinta / Devil ray {Mobula tarapacana} with remora, Azores, Atlantic

Brandon Cole / Whale Shark (Rhincodon typus) with 10 foot tail fin and Remora fish attached, Galapagos Islands, Pacific Ocean

Doug Perrine / Common remora fish {Remora remora} Bahamas

Doug Perrine / Newborn Lemon shark pup swims away from mother {Negaprion brevirostris} Bahamas, Caribbean (Non-ex).

Michael Pitts / Tiger shark {Galeocerdo cuvieri} with remora fish. South Africa, Atlantic. NB stripes

Jurgen Freund / Grey reef shark {Carcharhinus amblyrhynchos} with Remora fish, Great Barrier reef, Queensland, Australia

Georgette Douwma / Green turtle feeding on coral {Chelonia mydas} with Remora fish, Sipadan, Sabah

Jeff Rotman / Zambesi / Bull shark {Carcharhinus leucas} with Remora fish Natal, South Africa

Tim Fitzharris / Whale Shark (Rhincodon typus) eating with attendant Remoras (Remora remora), Philippines

Fred Bavendam / Loggerhead Sea Turtle (Caretta caretta) swimming underwater with Remora attached to its carapace, South Caicos, British West Indies

Norbert Wu / Caribbean Reef Shark (Carcharhinus perezii) with remora attached, Bahamas, Caribbean

Norbert Wu / Remora (Remora remora) top of head modified with plates to stick onto animals, worldwide

Flip Nicklin / Sperm Whale (Physeter macrocephalus) adult with attached Remoras skimming ocean surface, Dominica

Flip Nicklin / Manta Ray (Manta birostris) with two Remora (Remora remora) attached to it, Hallcion Reef, Cocos Island, Costa Rica

Flip Nicklin / Atlantic Spotted Dolphin (Stenella frontalis) underwater portrait with remora attached to belly, Bahamas

Shane Gross / Green sea turtle (Chelonia mydas) resting whilst feeding on Tapegrass (Halophila stipulacea) in seagrass bed, two Remora fish (Echeneis naucrates) waiting for scraps. Marsa Alam, Egypt.

Shane Gross / Green sea turtle (Chelonia mydas) feeding on Turtlegrass (Halophila stipulacea), Remora fish (Echeneis naucrates) scavenging remnants. Marsa Alam, Egypt.

Pascal Kobeh / Lemon shark (Negaprion brevirostris) resting on sea floor, Whitefin sharksucker (Echeneis neucratoides) remora cleaning inside mouth. Bahamas.

Pascal Kobeh / Lemon shark (Negaprion brevirostris) resting on sea floor with Whitefin sharksucker (Echeneis neucratoides) remora cleaning inside mouth, diver in background. Bahamas. 2019.

Pascal Kobeh / Sperm whale ((Physeter macrocephalus) female and calf below surface, several Whalesucker (Remora australis) remoras cleaning calf. Mauritius.

Pascal Kobeh / Lemon shark (Negaprion brevirostris) with Whitefin sharksucker (Echeneis neucratoides) remoras alongside Caribbean reef shark (Carcharhinus perezii) group, swimming around bait. Black grouper (Myctero...

Pascal Kobeh / Lemon shark (Negaprion brevirostris) group on sea floor surrounded by Whitefin sharksucker (Echeneis neucratoides) remoras. Bahamas.

Pascal Kobeh / Lemon shark (Negaprion brevirostris) group on sea floor surrounded by Whitefin sharksucker (Echeneis neucratoides) remoras, divers in background. Bahamas.

Pascal Kobeh / Lemon shark (Negaprion brevirostris) on sea floor, Whitefin sharksucker (Echeneis neucratoides) remora cleaning shark's nostril. Bahamas.

Pascal Kobeh / Lemon shark (Negaprion brevirostris) on sea floor, Whitefin sharksucker (Echeneis neucratoides) remora cleaning shark's mouth and teeth, group of remoras in background. Bahamas.

Sirachai Arunrugstitchai / Green sea turtle (Chelonia mydas) with a pair of Live sharksucker (Echeneis naucrates) swimming along the reef drop-off at Bunaken Island, Bunaken National Marine Park, North Sulawesi, Indonesia.

Doug Perrine / Spinner dolphin (Stenella longirostris) upside down in mid-air during high leap. Tail of Remora hanging down in front of dorsal fin. Pacific Ocean, Southern Costa Rica.

Brandon Cole / Manta Ray (Manta birostris) with two big remoras (Remora sp.) attached to the underside of the manta. Baja, Mexico, Pacific Ocean.

Brandon Cole / Manta ray (Manta birostris) with Remora attached underneath. Baja, Mexico, Pacific Ocean.

Sergio Hanquet / Sharksucker remora (Echeneis naucrates) attached to a ray, Tenerife, Canary Islands.

Noemie Stroh / Green turtle (Chelonia mydas) feeding on a seagrass bed, with Remora (Echeneidae), Marsa Alam, Red Sea, Egypt.

Shane Gross / A large, pregnant Bull shark (Carcharhinus leucas) cruising over sandy seabed off Playa Del Carmen, Mexico. December.

Pascal Kobeh / Whale shark (Rhincodon typus) with Remora (Remora remora) near its eye swimming in the open water surrounded with black jacks or trevally (Caranx lugubris), Revillagigedo islands, Mexico. Pacific Ocea...

Pascal Kobeh / Diver with Giant mantray (Mobula birostris) swimming in the open water with Remora (Remora remora) hung on its body and surrounded with Black jacks or trevally (Caranx lugubris), Revillagigedo islands...