Alex Mustard / Interaction, possibly predation, between two polychaete worms (Chloeia sp). Dauin, Dauin Marine Protected Area, Dumaguete, Negros, Philippines. Bohol Sea, tropical west Pacific Ocean.

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.

Constantinos Petrinos / Fire worm (Chloeia sp.) Lembeh Strait, North Sulwesi, Indonesia.

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