Flip Nicklin / Squirrelfish (Holocentrus sp) schooling at reef, Cocos Island, Costa Rica

Flip Nicklin / Squirrelfish (Holocentrus sp) schooling at reef, Cocos Island, Costa Rica

Nick Upton / Lisaku Park Forest from above, a mix of mature Fir (Abies sp) trees, Birch (Betula sp) and Eurasian aspen (Populus tremula). Forest host to Siberian flying squirrel (Pteromys volans). Estonia, April 2...

Richard Robinson / Spotfin squirrelfish (Neoniphon sammara) at South Minerva Reef / Teleki Tonga, a disputed territory in the South Pacific between Tonga and Fiji.

Linda Pitkin / Crown squirrelfish (Sargocentron diadema) The Barge wreck, near Bluff Point, Gubal I., Gulf of Suez, Egypt, Red Sea.

Jordi Chias / Safree squirrel fish (Sargocentron spiniferum) Safaga, Red Sea, Egypt

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) and Crown squirrelfish (Sargocentron diadema) on wreck colonised by corals, Red Sea, Egypt. January.

Georgette Douwma / Crown squirrelfish (Sargocentron diadema) shoal, at rest on coral reef. Egypt, Red Sea.

Georgette Douwma / Crown squirrelfish (Sargocentron diadema) shoal, at rest on coral reef. Egypt, Red Sea.

Georgette Douwma / School of Crown squirrelfish (Sargocentron diadema) Egypt, Red Sea.

Georgette Douwma / Coral reef with a school of Crown squirrelfish (Sargocentron diadema), a few White-edged-soldierfish (Myripristis murdjan) and a boat in background. Egypt, Red Sea.

Michael Pitts / Longjaw squirrel fish (Sargocenron spiniferum) shoal, Caribbean

Mark Moffett / Centipedes scewered for sale as food, Xiao Chi Jie Market, Beijing, China

Mark Moffett / Scorpions skewered for sale as food, Xiao Chi Jie Market, Beijing, China

Mark Moffett / Students picking lettuce to prepare salad under direction of Michelle Obama and White House chef Sam Kassat, White House, Washington D.C.

Mark Moffett / President Obama's personal chef Sam Kass in Michelle Obama's vegetable garden, White House, Washington D.C.

Norbert Wu / Common Squirrelfish (Holocentrus adscensionis) Pennant Bannerfish (Heniochus chrysostomus) and Emperor Angelfish (Pomacanthus imperator) near soft coral ledge, Raja Ampat Islands, Indonesia

Chris Newbert / Sea Fan (Melithaea sp) and Squirrelfish (Sargocentron) 60 feet deep, Solomon Islands

Michael Pitts / Crown squirrelfish {Sargocentron diadema} Midway, Pacific

Flip Nicklin / Squirrelfish (Holocentrus sp) portrait, Cocos Island, Costa Rica

Michael Pitts / Striped squirrel fish {Holocentrus spp} Midway Is, Pacific

Pete Oxford / Miss Darlington (Holocentrus rufus), Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Miss Darlington (Holocentrus rufus), Bonaire, Netherlands Antilles, Caribbean

Flip Nicklin / Cavalla (Caranx sp) and Squirrelfish (Holocentrus sp) schools patrolling reef, Cocos Island, Costa Rica

Matthias Breiter / Polar Bear (Ursus maritimus) cub watching cook through window, Churchill, Manitoba, Canada

David Fleetham / Spotfin squirrelfish (Neoniphon sammara) swimming over coral reef, Hawaii, Pacific Ocean.

Doug Perrine / Hawaiian squirrelfish (Sargocentron xantherythrum) at night, South Kona, Hawaii, Pacific Ocean.