Claudio Contreras / Mexican blind brotula (Typhliasina pearsei) a blind cave fish, sinkhole near Tulum, Yucatan Peninsula, Mexico, August. Endangered species.

Shane Gross / Bahamas cave fish / cusk eel (Lucifuga spelaeotes) an almost blind fish species, at the bottom of a blue hole on Eleuthera Island, Bahamas. Awarded in Underwater category, Wildlife Photographer of the...

Claudio Contreras / Mexican blind brotula (Typhliasina pearsei) a species of blind cave fish, sinkhole near Tulum, Yucatan Peninsula, Mexico, August. Vulnerable species.

Franco Banfi / Black brotula (Olipogus ater) Mitigliano Cave, Punta Campanella Marine Protected Area, Costa Amalfitana, Italy, Tyrrhenian Sea, Mediterranean.

Tui De Roy / Galapagos cuskeel / Orange brotula (Ogilbia galapagoensis) Acadamy Bay, Santa Cruz Island, Galapagos. Endemic.

Tui De Roy / Blind Cave Fish (Caecogilbia galapagoensis) among floating roots in underground brackish water fissures. Tortuga Bay, Santa Cruz Island, Galapagos