David Tipling / 2020VISION / Bar-tailed Godwit (Limosa lapponica) foraging for tidal-flat worm. Norfolk, January. Sequence 2 of 2.

PREMAPHOTOS / Flatworm {Biplanium} on leaf in tropical rainforest, Sumatra, Indonesia

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

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.

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

Pete Oxford / Flat worm on tree bark {Tricladida} Madagascar

Roger Powell / Bar-tailed fodwit (Limosa lapponica) in winter plumage bathed in winter sun and catching a Lugworm (Arenicola marina). Holy Island (Lindisfarne), Nothumberland, England, UK December.