SCOTLAND: The Big Picture / Two King scallops (Pecten maximus), South Arran Marine Protected Area, Isle of Arran, Scotland, UK, August.

SCOTLAND: The Big Picture / Queen scallop (Aequipecten opercularis) with ripe gonads, Shetland, Scotland, UK, May.

Alex Mustard / Scallop (Pecten maximus) Loch Carron, Ross and Comarty, Scotland, Great Britain. North East Atlantic Ocean.

Franco Banfi / Pacific pink scallop (Chlamys rubida) close up, Vancouver Island, British Columbia, Canada, Pacific Ocean

Franco Banfi / Pacific pink scallop (Chlamys rubida) Vancouver Island, British Columbia, Canada, Pacific Ocean

Stephen Dalton / Shepherd's needles (Scandix pecten-veneris) flowers, Cyprus March.

Ingo Arndt / Venus Comb Murex (Murex pecten), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Venus Comb Murex (Murex pecten), Meeresmuseum Ozeania, Riedenburg, Germany

Cyril Ruoso / Indian Comb (Pachycereus pecten-aboriginum) and the Sea of Cortez at sunset, El Vizcaino Biosphere Reserve, Mexico

Cyril Ruoso / Indian Comb (Pachycereus pectenaboriginum) cacti in lava field of the Volcan de las Virgenes, El Vizcaino Biosphere Reserve, Mexico

Cyril Ruoso / Indian Comb (Pachycereus pectenaboriginum) cacti in lava field of the Volcan de las Virgenes, El Vizcaino Biosphere Reserve, Mexico

Duncan Usher / St James Scallop (Pecten jacobaeus) shells seen in ultraviolet light, Donana National Park, Andalucia, Spain, Sequence 2 of 2