Rolf Nussbaumer / Haloween pennant dragonfly {Celithemis eponina} silhouette at sunrise, Welder Wildlife Refuge, Sinton, Texas, USA.

Rolf Nussbaumer / Haloween pennant dragonfly {Celithemis eponina}pair mating, Welder Wildlife Refuge, Sinton, Texas, USA.

Fred Bavendam / Longfin Bannerfish (Heniochus acuminatus) pair, Bali, Indonesia

Steven David Miller / Crimson rosella (Platycercus elegans) perched on branch, Grampians National Park, Victoria, Australia, May

Steven David Miller / Crimson rosella (Platycercus elegans) perched on branch, Grampians National Park, Victoria, Australia, May

Dave Watts / Crimson rosella (Platycercus elegans) Victoria, Australia

Dave Watts / Crimson rosella (Platycercus elegans) Victoria, Australia

John Abbott / Halloween pennant dragonfly (Celithemis eponina) male at rest, Martin Dies Jr. State Park, Texas, USA, June

LYNN M. STONE / Halloween pennant dragonfly (Celithemis eponina) resting on leaf in early morning dew, North Guilford, Connecticut, USA, August

LYNN M. STONE / Female Halloween pennant dragonfly (Celithemis eponina) resting on leaf, North Guilford, Connecticut, USA, July

LYNN M. STONE / Female Halloween pennant dragonfly (Celithemis eponina) on bud, Haddam, Connecticut, USA, July

LYNN M. STONE / Female Halloween pennant dragonfly (Celithemis eponina) on bud, Haddam, Connecticut, USA, July

John Abbott / Double-ringed pennant dragonfly (Celithemis verna) male at rest, Angelina National Forest, Texas, USA, June

Marie Read / Crimson Rosella (Platycercus elegans) perching. Lamington National Park, Queensland, Australia, November.

David Welling / Ornate Pennant Dragonfly (Celithemis ornata) female perching. Jasper County, Texas, USA.

LYNN M. STONE / Calico Pennant Dragonfly (Celithemis elisa) perched on a reed spike in prairie fen, male, Illinois, USA

LYNN M. STONE / Calico Pennant Dragonfly (Celithemis elisa) perched on a dried weed stem in prairie fen, male, Illinois, USA

Rod Williams / Crimson Rosella (Platycercus elegans elegans) feeding in flowering rainforest tree, Lamington National Park, SE Queensland, Australia, March

David Welling / Female Four-spotted pennant (Brachymesia gravida) on branch, Laguna Atascosa National Wildlife Refuge, Texas, USA

Tim Laman / Pennant's Red Colobus (Procolobus pennantii pennantii) monkey in rainforest. Adult male. Critically endangered species, endemic subspecies to Bioko Island, Equatorial Guinea, January

Tim Laman / Crimson Rosella (Platycercus elegans) perched, sub-tropical rainforest, Lamington National Park, Queensland, Australia

Tim Laman / Crimson rosella (Platycercus elegans) climbing up the arm of Jessica Laman (4 years) and pecking her clothes, Lamington National Park, Queensland, Australia. Model released August 2008

Steven David Miller / Crimson rosella {Platycercus elegans elegans} perched, Grampians National Park, Victoria, Australia

Philippe Clement / Pennant's top shell (Gibbula pennanti) with aperture showing, on beach, Normandy, France

Philippe Clement / Two Pennant's top shell (Gibbula pennanti) shells on beach, Normandy, France

Philippe Clement / Collection of Trochidae with Pennant's top shell (Gibbula pennanti), Flat top shell (Gibbula umbilicalis) and Grey top shell (Gibbula cineraria), Normandy, France

Philippe Clement / Pennant's top shell (Gibbula pennanti) shell, Normandy, France

Philippe Clement / Pennant's top shell (Gibbula pennanti) shell, Normandy, France

Philippe Clement / Pennant's top shell (Gibbula pennanti) shell on beach, Normandy, France

Philippe Clement / Two Pennant's top shells (Gibbula pennanti), Normandy, France

Steven David Miller / Crimson rosella {Platycercus elegans elegans} perched, Grampians National Park, Victoria, Australia

Steven David Miller / Crimson rosella {Platycercus elegans elegans} juvenile perched, Grampians National Park, Victoria, Australia

GEORGETTE DOUWMA / Pennant bannerfish (Heniochus chrysostomus), pair over barrel sponge. Raja Ampat, West Papua, Indonesia

Philippe Clement / Collection of Trochidae with Pennant's top shell (Gibbula pennanti), Flat top shell (Gibbula umbilicalis) and Grey top shell (Gibbula cineraria), Normandy, France

Philippe Clement / Pennant's top shell (Gibbula pennanti) shell with aperture showing, Normandy, France

Philippe Clement / Pennant's top shell (Gibbula pennanti) with aperture showing on beach, Normandy, France

Jouan & Rius / Australian / Port Lincoln ringneck parrots (Platycercus zonarius) at water hole, Flinders Ranges National Park, South Australia, Australia

Jane Burton / Longfin bannerfish / Wimplefish / Pennant coralfish {Heniochus acuminatus} captive, from Indo-Pacific

Jouan & Rius / Crimson rosella (Platycercus elegans), Queensland, Australia

Jouan & Rius / Crimson rosella (Platycercus elegans), Queensland, Australia

Jouan & Rius / Crimson rosella (Platycercus elegans) Queensland, Australia

Jouan & Rius / Crimson rosella (Platycercus elegans), Queensland, Australia

Paul Hobson / Crimson rosella (Platycerus elegans), adult on branch, South Australia

Theo Allofs / Crimson Rosella (Platycercus elegans) portrait, Australia

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

Larry Michael / Calico pennant dragonfly (Celithemis elisa) in morning dew, USA

Larry Michael / Calico pennant dragonfly (Celithemis elisa) USA

Steven David Miller / Haloween pennant dragonfly (Celithemis eponina) Everglades NP, Florida, USA

Fred Bavendam / Longfin Bannerfish (Heniochus Acuminatus) pair swimming together, Bali, Indonesia

Brent Hedges / Crimson Rosella {Platycercus elegans} Jervis Bay, New South Wales, Australia

Steven David Miller / Crimson rosella feeding (Platycercus eleganus) Australia

Steven David Miller / Crimson rosella (Platycercus eleganus) Australia

Rolf Nussbaumer / Haloween pennant dragonfly {Celithemis eponina} male profile, Welder Wildlife Refuge, Sinton, Texas, USA.

Rolf Nussbaumer / Four-spotted Pennant {Brachymesia gravida} adult, Welder Wildlife Refuge, Sinton, Texas, USA.

Rolf Nussbaumer / Haloween pennant dragonfly {Celithemis eponina} female on blade of grass, Welder Wildlife Refuge, Sinton, Texas, USA.

Chris Newbert / Pennant Bannerfish (Heniochus chrysostomus) purple Soft Coral (Plexauridae) and Leather Coral (Sarcophyton sp), Solomon Islands

Norbert Wu / Masked Butterflyfish (Chaetodon semilarvatus) school and Butterflyfish (Heniochus diphreutes), Red Sea, Egypt

Fred Bavendam / Longfin Bannerfish (Heniochus acuminatus) swimming along reef, Bali, Indonesia

Fred Bavendam / Bannerfish (Heniochus diphreutes) school along reef, Manado, North Sulawesi, Indonesia

Fred Bavendam / Bannerfish (Heniochus diphreutes) school, 45 meters deep on a reef wall swimming past a large Sponge and Crinoids, Manado, North Sulawesi, Indonesia

Steven David Miller / Crimson rosella. Australia (Platycercus eleganus)

Birgitte Wilms / Sponge (Xestospongia sp) and Bannerfish (Heniochus diphreutes) pair, Solomon Islands

Tim Laman / Crimson Rosella (Platycercus elegans) portrait, sub-tropical rainforest, Lamington National Park, Queensland, Australia

Mitsuaki Iwago / Portrait of Mitsuaki Iwago with Crimson Rosella (Playcercus elegans) perched on his head, taken in Cairns, Australia

Jouan & Rius / Crimson rosella (Platycercus elegans) perched on photographer's head, Lamington National Park, Queensland, Australia

Michael & Patricia Fogden / Crimson Rosella (Platycercus elegans), Lamington National Park, Queensland, Australia