Franco Banfi / Great hammerhead shark (Sphyrna mokarran) swimming over sandy seabed near resting Nurse sharks (Ginglymostoma cirratum), Bar jacks (Caranx ruber) and Remora fish, South Bimini, Bahamas. The Bahamas Na...

Pete Oxford / Sharksucker (Echeneis naucrates) Ambergris Caye, Belize.

Pete Oxford / Nurse Shark (Ginglymostoma cirratum) and Sharksucker (Echeneis naucrates) Halfmoon Caye. Lighthouse Reef Atoll, Belize.

Georgette Douwma / Greenthroat or Singapore parrotfish (Scarus prasiognathus), grazing on a granite boulder, with a small Remora (Echeneis naucrates) attached. Andaman Sea, Thailand.

Pascal Kobeh / Blackspotted stingray (Taeniurops meyeni) with a remora (Echeneis naucrates) attached to its belly swimming in the open water with a diver in the background. Ari Atoll, Maldives, Indian Ocean.

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

Pascal Kobeh / Blackspotted stingray (Taeniura melanospilos) and Striped remora (Echeneis naucrates) laying on sandy sea bed, Maldives. Indian Ocean.

Pascal Kobeh / White tip shark (Triaenodon obesus) resting on sea floor with a remora (Echeneis naucrates) attached to its back, Maldives. Indian Ocean.

Pascal Kobeh / Blacktip sharks (Carcharhinus limbatus) with Remoras (Echeneis naucrates) attached to some of them, Kwazulu-Natal, South Africa. Indian Ocean.

Pascal Kobeh / Green turtle (Chelonia mydas) on sea floor with Remora (Echeneis naucrates) on its shell / carapace, Mayotte. Indian Ocean.

Pascal Kobeh / Grey reef shark (Carcharhinus amblyrhinchos) in open water with a Striped remora (Echeneis naucrates) under its head, Palau. Philippine Sea.

Pascal Kobeh / Grey reef sharks (Carcharhinus amblyrhinchos) in open water. The shark on foreground has a Striped remora (Echeneis naucrates) under its head, Palau. Philippine Sea.