Terry Whittaker / Man collecting seabird eggs, including those of Common guillemots (Uria aalge), Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down cliff to collect seabird eggs, including those of Common guillemots (Uria aalge), Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being raised up cliff to collect seabird eggs, including those of Common guillemots (Uria aalge), Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Ashley Cooper / Plastic rubbish washed ashore from the sea in Glen Brittle, Isle of skye, Scotland, UK. May 2012

David Fleetham / Sargasum frogfish (Histiro histiro) near the surface floating on discarded polypropylene rope, Hawaii.

Laurie Campbell / Discarded plastic rope and commercial fishing netting washed up on shore at Luskentyre, South West Harris, Western Isles / Outer Hebrides, Scotland, May 2016

Dave Bevan / Swallow (Hirundo rustica) feeding juveniles perched on a rope near nest in a barn, Carmarthenshire, Wales, UK, September.

Steve Downer / Slug (Species unknown) descending on slime rope from leaf. UK. June.