Theo Bosboom / Star shaped sand pattern as photographed at low tide at Luskentyre beach, Lewis and Harris, Scotland, UK, October.

John Cancalosi / American bullfrog (Lithobates catesbeianus) swimming near Water lilies (Nymphaea sp) Washington DC, USA. July.

Alex Mustard / Plumose anemones (Metridium senile) and common starfish (Asterias rubens) beneath the sun in a Norwegian Fjord. Gulen, Bergen, Norway. North East Atlantic Ocean.

Juan Carlos Munoz,Juan Carlos Munoz / Starfish Beach, with many starfish in the shallow sea (Asteroidea) Colon Island, Bocas del Toro Archipelago, Bocas del Toro Province, Panama,

Juergen Freund / Sea pen octocoral (Veretillum sp) with polyps out, feeding, Misool, Raja Ampat, West Papua, Indonesia

Juergen Freund / Star shaped Pincushion / Pillow cushion starfish (Culcita novaeguinea), detail of the underbelly. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Star shaped Pincushion / Pillow cushion starfish (Culcita novaeguinea), detail of the underbelly. Lembeh Strait, North Sulawesi, Indonesia.

Edwin Giesbers / Borage (Borago officinalis) flowers, Menorca, Balearic Islands, Spain, Europe

Georgette Douwma / False fire urchin (Astropyga radiata) grouped on sandy bottom. Lembeh Strait, North Sulawesi, Indonesia.

David Shale / View inside the mantle of the deepsea Octopod {Grimpoteuthis discoveryi} Mid-Atlantic Ridge, North Atlantic Ocean

Jim Brandenburg / Thickspike Gayfeather (Liatris pycnostachya) flowers with eagle-shaped cloud, Touch the Sky Northern Tallgrass Prairie National Wildlife Refuge, Minnesota

Denis-Huot / The Fort de Bellegarde, Vauban's fort, Le Perthus, Occitanie, France. May.

Warwick Sloss / Collared earthstar fungus (Geastrum triplex) showing spore bag and rays, growing in leaf litter, North Somerset, United Kingdom. Late October.

Dave Watts / Yellow cushionplant (Phyllachne colensoi). Tasmania, Australia. November.

Dave Watts / Hewardia (Isophysis tasmanica). Tasmania, Australia. December.

Dave Watts / Waxlip orchid (Glossodia major). Tasmania, Australia. September.

Adrian Davies / Starfish fungus (Aseroe rubra) growing amongst moss, Scathophagid fly (Scathophagidae) resting on fungus. Oxshott, Surrey, England, UK. November.

Guy Edwardes / Devil's fingers fungus (Clathrus archeri). New Forest National Park, England, UK. October.

Shane Gross / Common sea star (Asterias rubens) juvenile on Eelgrass (Zostera marina) blade. Newfoundland, Canada. September.

Shane Gross / Common sea star (Asterias rubens) juvenile with flower appearance on Eelgrass (Zostera marina) blade, close up. Newfoundland, Canada. September.

Erlend Haarberg / Common haircap moss (Polytrichum commune). Forollhogna National Park, Norway. September.

Erlend Haarberg / Common haircap moss (Polytrichum commune). Forollhogna National Park, Norway. September.

Jeff Foott / Coyote melon (Cucurbita cordata) flower. Baja California, Mexico.

Shane Gross / Red cushion sea star (Oreaster reticulatus), three on sand in Seagrass bed. The Bahamas.

Nigel Cattlin / Allium stipitatum 'Mount Everest' spherical white crowded umbel of small flowers in late spring , May, garden flower, Berkshire

Nigel Cattlin / Allium hollandicum 'Purple Sensation' sphericical purple crowded umbel of purple flowers in late spring garden, May, Berkshire

Linda Pitkin / Star of Bethlehem (Ornithogalum umbellatum). Hampton Court Park, Richmond Upon Thames, England, UK. May.

Nigel Cattlin / Borage or starflower (Borago officinalis) blue flowers of this bristly annual herb attractive to bees and other invertebrates, Berkshire, England, UK, July.

David Hall / Haig's porcelain crab (Porcellanella haigae) living commensally on Sea pen (Pennatulacea) Crab recently emerged from exoskeleton. Pantar, Alor Archipelago, Indonesia.

Heather Angel / Morning glory (Ipomoea tricolor) flower with pollen grains scattered by visiting insects.

Chris Mattison / Common haircap moss (Polytrichum commune). Whitelye Common SSSI, Monmouthshire, Wales, UK. February.

Nick Upton / Blue stonecrop (Sedum caeruleum) clump on limestone rock. Golgo Plateau, Gennargentu National Park, Baunei, Sardinia, Italy. May.

Paul Hobson / Collared earth star (Geastrum triplex), two on woodland floor. South Yorkshire, England, UK. September.

Edwin Giesbers / Star clover (Trifolium stellatum). Cyprus. April.

Edwin Giesbers / Star clover (Trifolium stellatum) flowers. Cyprus. April.

Edwin Giesbers / Blue morning flower (Ipomoea indica) flowers and carpet of leaves. Cyprus. April.

Edwin Giesbers / White asphodel (Asphodelus albus) flowerhead. Cyprus. April.

Nick Upton / Common / Starlet cushion star (Asterina gibbosa) from Atlantic Ocean. Devon, England, UK. September.

Pal Hermansen / Coniferous forest, aerial view. High Coast World Heritage Site, Vasternorrland, Sweden. August, 2018.

Georgette Douwma / Gorgonian / Sea whip coral (Ellisella ceratophyta), close up, West Papua, Indonesia.

Georgette Douwma / Gorgonian / Fan coral (Solenocaulon akalyx), close up, West Papua, Indonesia.

Chris Mattison / RF - Marsh forklet moss (Dichodontium palustre). Ramsley Moor, Peak District National Park, Derbyshire. September. (This image may be licensed either as rights managed or royalty free.)

Claudio Contreras / Lacandonia (Lacandonia schismatica) parasitic flower, with inverted sex organs, Lacandon Rainforest, Mexico, May. Endangered and endemic species.

Enrique Lopez-Tapia / Kokerboom or Quiver Tree (Aloe dichotoma) at night, Quiver tree forest, Kalahari, Namibia.

Alex Mustard / RF- Leather sea star or Garlic star (Dermasterias imbricata) in shallow water beneath forest. Browning Pass, Vancouver Island, British Columbia, Canada. North East Pacific Ocean. (This image may be li...

Barrie Britton / Darwin's Orchid (Angraecum sesquipedale) species which is pollinated by a long-tongued moth, from Ambila, Madagascar. Photograph taken on location for BBC 'Wild Madagascar' Series, August 2009.

Alex Mustard / RF- Boulder star coral (Montastrea annularis) showing fluorescent green coloration, photographed under blue light at night, to excite fluorescent pigments in the coral, East End, Grand Cayman, Cayman...