Chien Lee / Minden / Madagascar Sucker-footed Bat (Myzopoda aurita) female, Fianarantsoa Province, Madagascar

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

Franco Banfi / Humboldt squid (Dosidicus gigas) at night off Loreto, Sea of Cortez, Baja California, Mexico, East Pacific Ocean.

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

Andy Rouse / Mountain gorilla (Gorilla beringei) baby held by mother, Rwanda

Christophe Courteau / Shore clingfish / Cornish sucker (Lepadogaster lepadogaster) portrait, Brittany, France, January.

Christophe Courteau / Shore clingfish / Cornish sucker {Lepadogaster lepadogaster} Brittany France

Alex Hyde / Cleg fly / Horsefly (Haematopota pluvialis) sucking blood from human.

Michel Roggo / Brook lamprey (Lampetra planeri) showing sucker, Europe

Sergio Hanquet / Common octopus (Octopus vulgaris) female laying eggs, close up of eggs and tentacles. Tenerife, Canary Islands.

Sergio Hanquet / Common octopus (Octopus vulgaris) female laying eggs, tentacles and eye visible amongst eggs. Tenerife, Canary Islands.