MYN / Gil Wizen / Huge terrestrial flatworm (Bipalium kewense), Mindo, Ecuador, March. meetyourneighbours.net project

Pascal Kobeh / Glorious flatworm (Pseudobiceros gloriosus) New Caledonia, Pacific Ocean.

Georgette Douwma / Kaleidoscopic image of Brittlestar (Ophiothrix species) on soft coral on which there are Acoel flatworms (Waminoa species). Rinca, Komodo National Park, Indonesia.

David Hall / Polyclad flatworm (Pseudobiceros uniarborensis). Komodo, Indonesia.

Magnus Lundgren / Wild Wonders of China / Free swimming marine flatworm (Tubellaria sp) Green Island, a small volcanic island in the Pacific Ocean, Taiwan

Magnus Lundgren / Wild Wonders of China / Yellow flatworm (Tubellaria sp,) Green Island, a small volcanic island in the Pacific Ocean , Taiwan

Georgette Douwma / Glorious flatworm (Pseudobiceros gloriosus). West Papua, Indonesia. Indo-West Pacific.

Georgette Douwma / Flatworm (Pseudoceros laingensis) West Papua, Indonesia. West Indo-Pacific.

Duncan Murrell / Land Planarian - flat worm, (Bipalium sp.) on a wild banana tree, Gunung Mulu National Park, UNESCO World Heritage Site, Sarawak, Malaysian Borneo.

Georgette Douwma / Racing stripe flatworm (Pseudoceros bifurcus) Puerto Galera, Philippines.

Georgette Douwma / Flatworm, probably Pseudobiceros sp, West Papua, Indonesia.

Emanuele Biggi / Hammerhead worms (Bipalium sp) on leaf, Sarawak. Borneo.

Luis Quinta / Mint-sauce worms (Symsagittifera roscoffensis / Convoluta roscoffensis) sunbathing on sand at low tide to allow the symbiotic algae to photosynthesise. Costa de Caparica beach, Portugal. April 2017.

Luis Quinta / Patterns made in sand by Mint-sauce worms (Symsagittifera roscoffensis / Convoluta roscoffensis) sunbathing at low tide to allow the symbiotic algae to photosynthesise with bivalve shell . Costa de Ca...

Luis Quinta / Patterns made in sand by Mint-sauce worms (Symsagittifera roscoffensis / Convoluta roscoffensis) sunbathing at low tide to allow the symbiotic algae to photosynthesise. Costa de Caparica beach, Portug...

Luis Quinta / Patterns made in sand by Mint-sauce worms (Symsagittifera roscoffensis / Convoluta roscoffensis) sunbathing at low tide to allow the symbiotic algae to photosynthesise. Costa de Caparica beach, Port...

Luis Quinta / Mint-sauce worms (Symsagittifera roscoffensis / Convoluta roscoffensis) sunbathing on sand at low tide to allow the symbiotic algae to photosynthesise. Costa de Caparica beach, Portugal. April 2017.

Sue Daly / Candy striped flatworm (Prostheceraeus vittatus) laying eggs, Isle of Man, July.

Constantinos Petrinos / Marine flatworm (Phrikoceros sp.) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Marine flatworm (Pseudobiceros flowersi) with ruffled marginal tentacles - pseudotentacles. Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Marine flatworm (Pseudobiceros flowersi) with ruffled marginal tentacles - pseudotentacles. Lembeh Strait, North Sulawesi, Indonesia.e shown that fish will spit them out after the briefest of nips. We...

Franco Banfi / Flatworm (Maiazoon orsaki) on sponge, Aldabra Atoll, Natural World Heritage Site, Seychelles, Indian Ocean.

Alex Hyde / Terrestrial flatworm (Planariidae) Danum Valley, Sabah, Borneo.

Alex Hyde / Terrestrial flatworm (Planariidae) resting in colied position. Danum Valley, Sabah, Borneo.

Alex Hyde / Terrestrial flatworm (Planariidae) Danum Valley, Sabah, Borneo.

Alex Hyde / Terrestrial flatworm (Planariidae) Danum Valley, Sabah, Borneo.

Franco Banfi / Flatworm, planarian (Rhimacephalus pulvinar), Lake Baikal, Siberia, Russia.

Georgette Douwma / Acoel flatworms (Waminoa sp.) on coral. Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Acoel flatworms (Waminoa sp.) on coral. Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Polyclad flatworm (Pseudobiceros fulgor). Lembeh Strait, North Sulawesi, Indonesia.

Solvin Zankl / Maria Pickering, PhD, Dept. of Ecology and Evolutionary Biology, University of Connecticut looking for tapeworm fauna in sharks. Huinay Scientific Field Station, Comau Fjord, Patagonia, Chile 2013

Solvin Zankl / Maria Pickering, PhD, Dept. of Ecology and Evolutionary Biology University of Connecticut looking for tapeworm fauna in sharks. Huinay Scientific Field Station, Comau Fjord, Patagonia, Chile 2013

Solvin Zankl / Tapeworm (Cestoda) a parasitic flatworm (genus Crossobothrium) found in sharks, Huinay Scientific Field Station, Comau Fjord, Patagonia, Chile

Solvin Zankl / Tapeworm (Cestoda) a parasitic flatworm (genus Crossobothrium) found in sharks, Huinay Scientific Field Station, Comau Fjord, Patagonia, Chile

Solvin Zankl / Tapeworm (Cestoda) a parasitic flatworm (genus Crossobothrium) found in sharks, Huinay Scientific Field Station, Comau Fjord, Patagonia, Chile

Alex Hyde / Land planarian (Geoplanidae) Central Caribbean foothills, Costa Rica

Georgette Douwma / Acoel flatworms (Waminoa sp) on polyps of Bubble coral (Plerogyra sinuosa) Indonesia. This flatworm can cover the whole surface of some corals, leaving them no way to catch plankton and their symbioti...

Georgette Douwma / Acoel flatworms (Waminoa sp) on polyps of Bubble coral (Plerogyra sinuosa) Indonesia. This flatworm can cover the whole surface of some corals, leaving them no way to catch plankton and their symbioti...

Georgette Douwma / Flatworm (Maiazoon orsaki) gliding over sponge Mabul, Indonesia.

Georgette Douwma / Symmetrical flatworm (Pseudoceros dimidiatus) Mabul, Malaysia.

Jan Hamrsky / Flatworm egg capsule on stalk (Dugesia gonocephala), Europe, July. Controlled conditions.

Jan Hamrsky / Flatworm (Dugesia gonocephala), Europe, July. Controlled conditions.

Jan Hamrsky / Freshwater flatworm (Polycelis nigra), Europe, June. Controlled conditions.

Alex Mustard / Undescribed species of flatworm (Cycloporus sp.) crawls over a sea squirt. Mioskon Island, Raja Ampat, West Papua, Indonesia. Dampier Strait. Tropical West Pacific Ocean

Jan Hamrsky / Flatworm (Dugesia sp) Europe, December, controlled conditions.

Jan Hamrsky / Flatworm (Dugesia sp) Europe, December, controlled conditions.

Sue Daly / Candy striped flatworm (Prostheceraeus vittatus) Guillaumesse, Sark, British Channel Islands.

Franco Banfi / Flatworm (Maiazoon orsaki) Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Juergen Freund / Fuchsia flatworm (Pseudoceros ferrugineus) close-up, Great Barrier Reef, Australia.

Juergen Freund / Fuchsia flatworm (Pseudoceros ferrugineus), dorsal view, Great Barrier Reef, Australia.

Juergen Freund / Fuchsia flatworm (Pseudoceros ferrugineus), dorsal view, Great Barrier Reef, Australia.

Juergen Freund / Fuchsia flatworm (Pseudoceros ferrugineus), dorsal view, Great Barrier Reef, Australia.

Juergen Freund / Fuchsia flatworm (Pseudoceros ferrugineus) close-up, Great Barrier Reef, Australia.

Juergen Freund / Fuchsia flatworm (Pseudoceros ferrugineus), dorsal view, Great Barrier Reef, Australia.

Alex Mustard / Flatworm (Cycloporus sp.) resting inside a Sea squirt (Didemnum molle) on a coral reef, Raja Ampat, West Papua, Pacific Ocean.

Sergio Hanquet / Flatworm (Thysanozoon sp.), moving over stones through undulating ripples of body, Tenerife, Canary Islands, Atlantic ocean.

Emanuele Biggi / Land flatworm (Diversibipalium sp.) crawling over a fallen leaf in the leaf litter of a primary forest, Mulu National Park, Sarawak, Borneo.

Georgette Douwma / Composite image of marine invertebrates on black background. Top row from left: Tube anemone (Ceriantharia), Yellow sea cucumber (Colochirus robustus), Nudibranch (Nembrotha lineolata), Squat shri...

Georgette Douwma / Composite image of marine invertebrates on black background showing huge variety and diversity in group, including crustacean tunicate, flatworm, fan worm, stony coral, soft coral, sponge, nudibranch,...

David Maitland / Tapeworm (Taenia pisiformis) of European brown hare (Lepus europaeus) showing 'circular-saw-like' structure on the head, or scolex, which will anchor into the hare's small intestine. Mi...

Franco Banfi / Flat worm (Prostheceraeus sp.) on coral, rare albino species which inhabits poorly lit environments, Vis Island, Croatia, Adriatic Sea, Mediterranean.

David Fleetham / A pair of marine flatworms (Thysanzoon nigropapilosus) on coral, Yap, Micronesia.

Chris Mattison / Australian flatworm (Australoplana sanguinea) on sphagnum moss (Sphagnum sp.), introduced predatory flatworm found in several parts of UK. Feeds on earthworms and considered a pest of agriculture/hort...

Chris Mattison / Australian flatworm (Australoplana sanguinea) on Sphagnum moss (Spagnum sp.) introduced predatory flatworm found in several parts of UK. Feeds on earthworms and considered a pest of agriculture/hortic...

Joao Burini / Flatworm (Geoplaninae) preying on Harvestman (Gagrellinae) Southeastern Atlantic Forest, Mantiqueira Mountain Range, Sao Francisco Xavier, Sao Paulo, Brazil.

Joao Burini / Flatworm (Geoplaninae) on a mossy tree trunk, Southeastern Atlantic Forest, Mantiqueira Mountain Range, Sao Francisco Xavier, Sao Paulo, Brazil.

Alex Hyde / Hammerhead flatworm (Geoplanidae), Danum Valley, Sabah, Borneo.

Alex Hyde / Hammerhead flatworm (Geoplanidae), Danum Valley, Sabah, Borneo.

Karine Aigner / Portrait of a flatworm (Pseudogeoplana) on a dead leaf at night, Mindo, Ecuador.

Karine Aigner / Portrait of a flatworm (Pseudogeoplana) on a dead leaf at night, Mindo, Ecuador.

David Fleetham / A yet unnamed Flatworm (Paraplanocera sp.) which has been known to science for sometime but is yet to be named. It has been seen in the Marshall Islands, the Red Sea, Papua New Guinea the Galapagos Is...

Franco Banfi / Black flatworm (Pseudobiceros splendidus) on encrusting sponge, Ponza island, Italy, Tyrrhenian Sea, Mediterranean.

Franco Banfi / Black flatworm (Pseudobiceros splendidus) on encrusting sponge, Ponza island, Italy, Tyrrhenian Sea, Mediterranean.

Franco Banfi / Black flatworm (Pseudobiceros splendidus) on encrusting sponge, Ponza island, Italy, Tyrrhenian Sea, Mediterranean.

David Fleetham / Gold rim flatworm (Pseudoceros paralaticlavus) at night, Hawaii.

Morley Read / Terrestrial flatworm (Platyhelminthes) feeding on Beetle. Orellana Province, Ecuador.

Robin Chittenden / Common amber snail (Succinea putris) parasitised by Green-banded broodsac (Leucochloridium paradoxum). Norfolk, England, UK. September.

Jan Hamrsky / Freshwater flatworm (Dugesia gonocephala) on dead leaf, Europe, April, controlled conditions

Jan Hamrsky / Freshwater flatworm (Dugesia gonocephala) on dead leaf, Europe, April, controlled conditions

Jan Hamrsky / Freshwater flatworm (Dugesia gonocephala) on dead leaf, Europe, April, controlled conditions

Georgette Douwma / Flatworm (Pseudoceros sp) in coral reef. Derawan Islands, East Kalimantan, Indonesia.

Georgette Douwma / Acoel flatworm (Waminoa sp) group on Bubble coral (Plerogyra sp). Derawan Islands, East Kalimantan, Indonesia.

Will Watson / New Zealand Flatworm (Arthurdendyus trianguluatus), invasive species, County Down, Northern Ireland October 2019.

Martin Camm / Carwardine / Narwhal (Monodon monoceros) adult femal tail (flukes) upperside No more than 15 illustrations by Martin Camm, Rebecca Robinson and/or Toni Llobet to be used in a single project or book edition...

Martin Camm / Carwardine / Narwhal (Monodon monoceros) adult male tail (flukes) upperside No more than 15 illustrations by Martin Camm, Rebecca Robinson and/or Toni Llobet to be used in a single project or book edition,...

Martin Camm / Carwardine / Humpback whale (Megaptera novaeangliae) Underside of tail (fluke) comparisons No more than 15 illustrations by Martin Camm, Rebecca Robinson and/or Toni Llobet to be used in a single project o...