Jack Dykinga / Snow goose (Chen caerulescens) landing into a tight packed flock on lake, Bosque del Apache National Wildlife Refuge, New Mexico, USA. January.

Ingo Arndt / Bed of Blue mussels (Mytilus sp.) densely packed together on rock, Lamberts Bay, South Africa

Danny Green / Knot (Calidris canutus) and grey plover (Pluvialis squatarola) roost at high tide with numerous birds packed tightly together, Snettisham, Norfolk, October. Bookplate from Danny Green's 'The Long Jour...

Erlend Haarberg / Norway spruce (Picea abies) forest covered by packed snow, Riisitunturi National Park, Finland, February 2006

Nigel Cattlin / Banana (Musa x paradisiaca) cross section showing tightly packed leaves is pseudostem.

Yashpal Rathore / Freshly roasted coffee bean packed for sale, Coorg India

Magnus Lundgren / Wild Wonders of China / Artificial reefs packed with Goatfish (Mullidae) Green Island, a small volcanic island in the Pacific Ocean , Taiwan

Karine Aigner / Vials of blood from a Hermit thrush (Catharus guttatus) in a centrifuge after being spun. The centrifuge separates the plasma (yellow) from the packed red blood cells (red). This research is to measu...

David Fleetham / Commensal shrimp (Pontonides unciger) with tail packed with eggs, Fiji.

Dong Lei / Houses of the Lisu people tightly packed together on slope, Weixi county, Yunnan Province, China. July 2009

SCOTLAND: The Big Picture / Wind created patterns in layers of packed snow on Meall Dearg with Am Bodach in background, Aonach Eagach, Glencoe, Scotland, UK, February 2017.

Nick Upton / Glass eels, young European eel (Anguilla anguilla) elvers being packed in insulated boxes with ice and water at UK Glass Eels for transport to Germany for reintroduction projects, Gloucester, UK, Marc...