Sue Daly / Feather duster fan worm (Sabella spallanzanii) with tentacles moving in the current, Sark, British Channel Islands, UK, August.

Claudio Contreras / Social feather duster worm (Bispira brunnea) Cancun national Park, Caribbean Sea, Mexico, July

Konrad Wothe / Fieldfare (Turdus pilaris) catching earthworm, Germany

David Shale / Solenosmilia sp and eunicid polychaete and bamboo coral. Collected from coral sea mount near Dragon vent field on SW Indian Ridge, Indian Ocean.

David Shale / Deepsea benthic Sea cucumber (Peniagone sp) with commensal polynoid polychaete, from mid atlantic ridge, depth approx 2600m, June 2010

Juergen Freund / Charlotte Watson snorkels down to collect sand which may contain polychaete worms, Coral Reef census, Lizard Island, Queensland, Australia, April 2008. Model released

Piotr Naskrecki / Earthworm pair, Atewa Range Forest Reserve, Ghana

Piotr Naskrecki / Earthworms, Atewa Range Forest Reserve, Atewa Range, Ghana

Konrad Wothe / Common Earthworm (Lumbricus terrestris), Germany

Chris Newbert / Feather Duster Worm (Sabellastarte sp) in the shape of a heart, 40 feet deep, Solomon Islands

Pascal Kobeh / Hard coral (Porites lutea) with Christmas-tree worms (Spirobranchus giganteus), New Caledonia, Pacific Ocean.

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.

Georgette Douwma / Kaleidoscopic image of Featherduster worm. Indonesia.

Georgette Douwma / Kaleidoscopic image of Variegated feather duster (Bispira variegata), Sabellidae. Puerto Galera, Philippines.

Georgette Douwma / Kaleidoscopic image of Variegated feather duster (Bispira variegata), Sabellidae. Puerto Galera, Philippines.

Georgette Douwma / Kaleidoscopic image of Indian fan worm (Sabellastarte indica), Mabul, Malaysia.

Georgette Douwma / Kaleidoscopic image of Fan worm (Sabella sp.), Puerta Galera, Philippines.

Georgette Douwma / Kaleidoscopic image of Variegated feather duster (Bispira variegata), Sabellidae. Puerto Galera, Philippines.

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.

David Hall / Red fanworm / mopworm (Protula bispiralis). Komodo, Indonesia.

Tony Wu / Polychaete worm (Syllidae) as pelagic sexually mature worm / epitoke carrying eggs. Hakodate, Hokkaido, Japan. May.

Tony Wu / Polychaete worm (Syllidae) as pelagic sexually mature worm / epitoke carrying eggs, prior to spawning. Hakodate, Hokkaido, Japan. May.

Gary Bell/ Oceanwide / Hard Tube Coco Worm (Protula magnifica) filter feeding in Euphyllia Coral (Euphyllia ancora), Great Barrier Reef, Australia

Gary Bell/ Oceanwide / Hard Tube Coco Worm (Protula magnifica) filter feeding, Great Barrier Reef, Australia

Gary Bell/ Oceanwide / Bristle Worm (Chloeia fusca), Anilao, Philippines

Pascal Kobeh / Field of Peacock feather dusters / Spiral tube-worms (Sabella spallanzanii), Canary Islands

Pascal Kobeh / Marine polychaete tube worm / feather duster worm (fam. Sabellidae) in a hard coral (fam. Faviidae), Sulu sea, Philippines

Shane Gross / Atlantic Palolo (Eunice fucata) looking for food just before retreating back into her burrow, in land locked alakaline lagoon on Eleuthera Island, Bahamas.

Jordi Chias / Bristle worm (Polychaeta sp), Antarctic Peninsula, Antarctica.

SCOTLAND: The Big Picture / Serpulid reefs (Serpula vermicularis), Loch Creran, Scotland, UK, August.

Georgette Douwma / Christmas tree worm (Spirobranchus sp). West Papua, Indonesia. Indo-West Pacific.

Georgette Douwma / Christmas tree worm (Spirobranchus sp). West Papua, Indonesia. Indo-West Pacific.

Georgette Douwma / Fan worm (Sabellastarte sp) West Papua, Indonesia. Indo-West Pacific.

Georgette Douwma / Fan worm (Sabella sp) West Papua, Indonesia. Indo-West Pacific.

Nick Upton / Honeycomb worm (Sabellaria alveolata) reef. Clustered tubes built of sand grains attached to rocks, exposed at low tide. Duckpool Beach, Cornwall, Devon, UK. September 2018.

Nick Upton / Green-leaf worm (Eulalia viridis) scavenging on rocks encrusted with Barnacles (Semibalanus balanoides). Treyarnon Bay, Cornwall, England, UK. September.

Georgette Douwma / Feather duster worm (Protula magnifica). North Sulawesi, Indonesia.

Georgette Douwma / Feather duster worm (Protula magnifica). North Sulawesi, Indonesia.

Georgette Douwma / Christmas tree worm (Spirobranchus giganteus). North Sulawesi, Indonesia.

Georgette Douwma / Christmas tree worm (Spirobranchus giganteus). North Sulawesi, Indonesia.

Chris Mattison / Part of a colony of Honeycomb worms (Sabellaria alveolata) a reef-forming polychaete worm, exposed at low tide. Nash Point, Glamorgan, Wales, UK.

Georgette Douwma / Variegated feather duster (Bispira variegata) Sabellidae. Puerto Galera, Philippines.

Georgette Douwma / Magnificent feather duster worm (Protula magnifica) Puerto Galera, Philippines.

Georgette Douwma / Variegated feather duster worm (Bispira variegata) Puerto Galera, Philippines.

Konrad Wothe / Lugworm / Sandworm (Arenicola marina) holes and casts on mudflats, on the coast of the North Sea, Germany, June.

Andy Jackson / 2020VISION / Sea mouse (Aphrodite aculeata close up of iridescent hairs, Loch Fyne, Scotland, UK. Screen grab from video.

Andy Jackson / 2020VISION / Sea mouse (Aphrodite aculeata close up of iridescent hairs, Loch Fyne, Scotland, UK. Screen grab from video.

Andy Jackson / 2020VISION / Sea mouse (Aphrodite aculeata Loch Fyne, Scotland, UK. Screen grab from video.

David Williams/ BIA / Bokmakierie Bushshrike (Telophorus zeylonus) with leech prey, Namibia

Sue Daly / Eye lash worm (Myxicola infundibulum) Les Ecrehous, Jersey, British Channel Islands, June.

Heidi & Hans-Juergen Koch / Common Earthworm (Lumbricus terrestris), Germany

Heidi & Hans-Juergen Koch / Common Earthworm (Lumbricus terrestris) on mound in meadow, Germany

Paul Bertner / Tiger Leech (Haemadipsa picta), Mount Isarog National Park, Philippines

Paul Bertner / Tiger Leech (Haemadipsa picta), Bach Ma National Park, Vietnam

Paul Bertner / Tiger Leech (Haemadipsa picta), Kerinci Seblat National Park, Sumatra, Indonesia

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

Constantinos Petrinos / Bobbit worm (Eunice aphroditois) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Bobbit worm (Eunice aphroditois) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Bobbit worm (Eunice aphroditois) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Bobbit worm (Eunice aphroditois) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Bobbit worm (Eunice aphroditois) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Bobbit worm (Eunice aphroditois) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Bobbit worm (Eunice aphroditois) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Bobbit worm (Eunice aphroditois) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Bobbit worm (Eunice aphroditois) Lembeh Strait, North Sulawesi, Indonesia.

Sue Daly / Peacock tube worm (Sabella pavonina), with tentacles moving in the current, Sark, British Channel Islands, UK, June.

Sue Daly / Group of Spiral fan worms (Bispira volutacornis), Sark, British Channel Islands, UK, June.

Alex Mustard / Christmas tree worm (Spirobranchus giganteus) growing out from a coral, next to a bed of algae. East Of Eden, Similan Islands, Thailand. Andaman Sea, Indian Ocean.

Nick Upton / Ross worm tube (Sabellaria spinulosa) attached to intertidal rocks exposed on a low spring tide, Cornwall, UK, April.

Georgette Douwma / Indian fanworm (Sabellastarte indica). Lembeh Strait, North Sulawesi, 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

Solvin Zankl / Feather worm (Hypsicomus phaeotaenia) size around 6cm, Comau Fjord, Patagonia, Chile, Atlantic Ocean

Richard Herrmann / Red Sea Urchin (Strongylocentrotus franciscanus) and Purple Sea Urchin (Strongylocentrotus purpuratus) feeding on Southern Sea Palm (Eisenia arborea) creating urchin barren, Santa Cruz Island, Channel...

Will Watson / Silurian annelid burrows of a terebellid polychaete worm (Oikobesalon, previously Trachyderma) and brachipod fossils (Microsphaeridiorhynchus nucula), Wenlock and Ludlow Series, Herefordshire, England...

Tony Wu / Bobbit worm (Eunice aphroditois) protruding from its burrow in the muck of the Lembeh Strait, Indonesia. Bobbit worms are ambush predators, lunging out to grasp prey with their pincers.

Tony Wu / Bobbit worm (Eunice aphroditois) protruding from its burrow in the muck of the Lembeh Strait. Bobbit worms are ambush predators, lunging out to grasp prey with their pincers.

Pascal Kobeh / Bobbit worm (Eunice aphroditois) half out burrow, Sulu Sea, Philippines

Pascal Kobeh / Bobbit worm (Eunice aphroditois) half out burrow, Sulu Sea, Philippines

Pascal Kobeh / Bobbit worm (Eunice aphroditois) coming out burrow at night, Sulu Sea, Philippines

Georgette Douwma / Fan worm (Sabella sp) and unknown sponge, Raja Ampat, West Papua, Indonesia.

Georgette Douwma / Coral worms (Filograna implexa / Serpulidae). A colonial species of worm that builds irregular masses of calcareous tube. West Papua, Indonesia.

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) fourty-one year old female with her three year old baby son, Gombe National Park, Tanzania

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.

Georgette Douwma / Feather duster worms ( Filogranella elatensis) Indonesia.

Georgette Douwma / Fan worm (Sabella fusca) Lembeh Strait, Sulawesi, Indonesia.

Georgette Douwma / Feather duster worm (Bispira sp) Lembeh, Sulawesi, Indonesia.

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

Solvin Zankl / Giant scale worm (Eulagisca gigantea) specimen from deep sea Antarctic Ocean.

Solvin Zankl / Giant scale worm (Eulagisca gigantea) specimen from deep sea Antarctic Ocean.