Jordi Chias / Potato cod (Epinephelus tukula) Zavora Coast, Mozambique, Indian Ocean.

Jordi Chias / Potato cod (Epinephelus tukula) Pomene Coast, South Mozambique, Indian Ocean, South-East Coast.

Jordi Chias / Potato cod (Epinephelus tukula) with school Blueline snappers (Lutjanus kasmira) Tofo Coast, Mozambique, Indian Ocean. South-East Coast.

Jordi Chias / Potato cod (Epinephelus tukula) Tofo Coast, Mozambique. Indian Ocean.

Franco Banfi / Potato cod grouper (Epinephelus tukula), Aldabra Atoll, Natural World Heritage Site, Seychelles, Indian Ocean.

Tony Wu / Potato cod (Epinephelus tukula) being cleaned by Bluestreak cleaner wrasse (Labroides dimidiatus) Carl's Ultimate dive site in the Eastern Fields of Papua New Guinea

Tony Wu / Potato cod (Epinephelus tukula) being cleaned by Bluestreak cleaner wrasse (Labroides dimidiatus) Carl's Ultimate dive site in the Eastern Fields of Papua New Guinea

Pete Oxford / Potato cod (Epinephelus tukula) investigating diver with Blacktip Trevally (Caranx heberi) in background, on baited shark dive. Umkomaas. KwaZulu Natal, South Africa.

Pascal Kobeh / Brown-marbled grouper (Epinephelus fuscoguttatus) laying on sandy sea floor, whilst cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus) Sudan. Red Sea.

Cheryl-Samantha Owen / Potato grouper (Epinephelus tukula), Aldabra Atoll, Seychelles, Indian Ocean

Fred Bavendam / Potato Cod (Epinephelus tukula), Queensland, Australia

Karen Bass / Potato harvest, Colca valley, Peru