Solvin Zankl / Tiny crab on Broad-toothed Gulfweed (Sargassum fluitans) Sargassum Community. Sargasso Sea, Bermuda

Sergio Hanquet / Gulfweed crab (Planes minutus), epibiont on Loggerhead turtle (Caretta caretta). Tenerife, Canary Islands.

MYN / Paul Marcellini / Sargassum crab (Portunus sayi) Biscayne National Park, Florida, USA, April. meetyourneighbours.net project

David Shale / Swimming crab amongst Sargassum weed {Sargassum sp} Atlantic ocean

Alex Mustard / Spider crab / Cornish king crab (Maja brachydactyla) in shallow water amongst Wireweed (Sargassum muticum). Pendennis Head, Cornwall, UK. English Channel.

Shane Gross / Sargassum swimming crab (Portunus sayi) taking shelter in a plastic bag. Contoy Island, Mexico.

Shane Gross / Sargassum swimming crab (Portunus sayi) at night in the Sargasso Sea, Atlantic Ocean, International Waters.