Nick Garbutt / Aggregation / bloom / swarm of Moon Jellyfish (Aurelia aurita) in the clear waters of Loch Na Keal, off the Isle of Mull, north west Scotland, UK, June, Photographed through the surface.

Doug Perrine / Bioluminescence from glowing plankton in sea tide line on beach, with stars above and ship lights on horizon, Vaadhoo Island, Raa Atoll, Maldives, Indian Ocean, October 2010

Gary Bell/ Oceanwide / Whitemouth Moray (Gymnothorax meleagris) being cleaned by Cleaner Wrasse (Labroides sp) juvenile, Christmas Island, Australia

Shane Gross / Pelagic thresher shark (Alopias pelagicus) cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus) at Monad Shoal off Malapascua Island, Philippines.

Shane Gross / Pelagic thresher shark (Alopias pelagicus) being cleaned by a bluestreak cleaner wrasse (Labroides dimidiatus) at Monad Shoal off Malapascua Island, Philippines.

David Fleetham / Cleaner wrasse (Labroides dimidiatus) swimming alongside Golden damsel (Amblyglyphidodon aureus) looking for parasites, Fiji, Pacific Ocean.

Alastair MacEwen / Time-lapse of Cherry (Prunus) blossom emerging, Somerset, England, UK, April.

Ingo Arndt / Common wasp (Vespula vulgaris) detail of nest surface, Hessen, Germany, April.

Ingo Arndt / Buff tip moth (Phalera bucephala) protective web covering caterpillars and food plant, Hungary, June.

Ingo Arndt / Garden Spider (Araneus diadematus) web with dew drops, at sunrise, Germany, August.

Ingo Arndt / View from Margaret Knoll lookout of sunset and rain clouds over the Indian Ocean and the east coast of Christmas Island, Indian Ocean, Australian Territory, December 2009.

Ingo Arndt / Flock of Bramblings (Fringilla montifringilla) perched together in branches. It's estimated that four million individiuals return to roost during winter in Black Forest, Germany. February.