Roger Powell / Bar-tailed godwit (Limosa lapponica) in winter plumage, extracting a Lugworm from a deep hole at low tide, Boulmer, Northumberland, UK

Wild Wonders of Europe / Novák / Lugworm (Anericola marina) casts on sand, Japsand, Schleswig-Holstein Wadden Sea National Park, Germany, April 2009

Sue Daly / Lugworm cast {Arenicola marina} Jersey, Channel Isles, UK

Ernie Janes / Man digging for lug worms (Arenicola marina) for fisbing bait, towards Blakeney Point Norfolk, November

Nick Upton / Cast and feeding depression of a Lugworm (Arenicola maritima) on sandy shore at low tide with people walking by in the background at sunset, St.Bees, Cumbria, UK, July.

Nick Upton / Cast and feeding depression of a Lugworm (Arenicola maritima) on sandy shore at low tide, St.Bees, Cumbria, UK, July.

Nick Upton / Cast and feeding depression of a Lugworm (Arenicola maritima) on sandy shore at low tide, St.Bees, Cumbria, UK, July.

MYN / Niall Benvie / Lugworm (Arenicola marina), Scotland, UK, September meetyourneighbours.net project

Chris Gomersall / 2020VISION / Bar-tailed godwit (Limosa lapponica) adult in winter plumage feeding on lugworm on mudflats, The Wash, Norfolk, England, UK, December

Chris Gomersall / 2020VISION / Bar-tailed godwit (Limosa lapponica) in winter plumage feeding on lugworm, with bill covered in mud, The Wash, Norfolk, England, UK, March

Ernie Janes / Lugworms (Arenicola marina) dug for fishing bait, UK

Ernie Janes / Lugworm (Arenicola marina) casts in sand and mud at low tide, UK

Ernie Janes / Fisherman digging for Lugworms (Arenicola marina) on mudflats at low tide, for use as fishing bait, Morston, Norfolk, UK, May

Roger Powell / Bar-tailed godwit (Limosa lapponica) in winter plumage, extracting a Lugworm from the edge of a tidal pool, Boulmer, Northumberland, UK

Roger Powell / Bar-tailed godwit (Limosa lapponica) in winter plumage, extracting a Lugworm from a deep hole at low tide, Boulmer, Northumberland, UK

Roger Powell / Bar-tailed godwit (Limosa lapponica) in winter plumage, extracting a Lugworm from a deep hole at low tide, Boulmer, Northumberland, UK

Chris Gomersall / Bar tailed godwit (Limosa lapponica) with lugworm, feeding on estuary mud, Norfolk, England, March

Robert Thompson / Beach with sand covered in Lugworm casts and burrows {Arenicola marina} County Antrim, Northern Ireland

Robert Thompson / Lugworm cast and burrow in sand {Arenicola marina} Northern Ireland, UK.

Roger Powell / Bar-tailed Godwit (Limosa lapponica) catching Lugworm (Arenicola marina) & pulling it out from its hole in the sand. Holy Island, Northumberland, UK

Niall Benvie / MYN / Lugworm {Arenicola marina} Scotland, UK

Niall Benvie / Lugworm {Arenicola marina} Scotland, UK meetyourneighbours.net project

MYN / Niall Benvie / Three Lugworms {Arenicola marina} Scotland, UK meetyourneighbours.net project

Ingo Arndt / Lugworm (Arenicola marina) holes during low tide, Sylt Island, North Sea, Germany

Philippe Clement / European Lugworm {Arenicola marina} cast of defaecated sediment, North Sea, Belgium

Philippe Clement / European Lugworm {Arenicola marina} burrows showing the characteristic depression at the head ends (blow hole) and a cast of defaecated sediment at the tail ends, North Sea, Belgium

Philippe Clement / European Lugworm {Arenicola marina} burrow showing the characteristic depression at the head end (blow hole) and a cast of defaecated sediment at the tail end, North Sea, Belgium

Philippe Clement / European Lugworm {Arenicola marina} burrow showing the characteristic depression at the head end (blow hole) and a cast of defaecated sediment at the tail end, North Sea, Belgium

Sue Daly / Lugworm cast (Arenicola marina) Jersey, Channel Isles, UK

Ingo Arndt / Lugworm (Arenicola marina) three centimeters, Helgoland, Germany

Willem Kolvoort / Sand excrements from Lugworm (Arenicola marina), White Sea, Russia