Nick Hawkins / Blue shark (Prionace glauca) with a pair of pilot fish (Naucrates ductor) off Halifax, Nova Scotia, Canada. July.

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) accompanied by pilotfish (Naucrates ductor) as it cruises beneath the surface of the Red Sea, close to Little Brother Island. The Brothers Islands, Egy...

Chris & Monique Fallows / Blue Shark (Prionace glauca) viewed from below with Pilot fish (Naucrates ductor) Cape Point, South Africa.

Norbert Wu / Oceanic White-tip Shark (Carcharhinus longimanus) with Pilot Fish (Naucrates ductor), Bahamas, Caribbean

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.

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...

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) with Pilot fish (Naucrates ductor). Tropical West Atlantic Ocean, off Cat Island, Bahamas.

Jeff Rotman / Blacktip shark (Carcharhinus limbatus) with symbiotic Pilot fish (Naucrates ductor) swimming below, Cocos island, Costa Rica - Pacific ocean.

Jeff Rotman / Great White shark (Carcharodon carcharias) swimming with symbiotic Pilot fish (Naucrates ductor) and schooling Mackerel scad (Decapterus macarellus) Guadalupe Island, Mexico, Pacific Ocean.

Wild Wonders of Europe / Lundgre / Loggerhead turtle (Caretta caretta) with a shoal of Pilot fish (Naucrates ductor) Pico, Azores, Portugal, June 2009

Wild Wonders of Europe / Lundgren / Loggerhead turtle (Caretta caretta) with a shoal of Pilot fish (Naucrates ductor) Pico, Azores, Portugal, June 2009

Wild Wonders of Europe / Lundgre / Loggerhead turtle (Caretta caretta) with a shoal of Pilot fish (Naucrates ductor) Pico, Azores, Portugal, June 2009 WWE BOOK. WWE OUTDOOR EXHIBITION. Wild Wonders kids book.