Sergio Hanquet / Fire worm (Hermodice carunculata), Tenerife, Canary Islands.

Sergio Hanquet / Fire worm (Hermodice carunculata), Tenerife, Canary Islands.

Sergio Hanquet / Fire worm (Hermodice carunculata). Tenerife, Canary Islands.

Solvin Zankl / Bearded fireworm (Hermodice carunculata) photographed with ultraviolet / UV light, Bonaire, Leeward Antilles, Caribbean region, Netherlands Antilles

Solvin Zankl / Bearded fireworm (Hermodice carunculata) photographed with ultraviolet / UV light, Bonaire, Leeward Antilles, Caribbean region, Netherlands Antilles

Solvin Zankl / Bearded fireworm (Hermodice carunculata) photographed with ultraviolet / UV light, Bonaire, Leeward Antilles, Caribbean region, Netherlands Antilles

Franco Banfi / Fireworm (Hermodice carunculata) on a Yellow gorgonian (Eunicella cavolini) covered with mucilage, Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Fireworm (Hermodice carunculata), Santa Maria Island, Azores, Portugal, Atlantic Ocean.

Franco Banfi / Fire worm (Hermodice carunculata) on rocks, Santa Maria Island, Azores, Portugal, Atlantic Ocean

Franco Banfi / Fire worm (Hermodice carunculata), Santa Maria Island, Azores, Portugal, Atlantic Ocean

Pascal Kobeh / Bearded fireworm (Hermodice carunculata), Gozo Island, Malta. Mediterranean Sea.

Franco Banfi / Slope close to wreck of the cargo boat 'Vassilios T' with Bearded fireworm (Hermodice carunculata) with Sea star (Hacelia attenuata) Vis Island, Croatia, Adriatic Sea, Mediterranean