Nigel Cattlin / Sea kale (Crambe maritima) on gravel. Chesil Beach, Dorset, England, UK. May.
01630292
David Hall / Crocodile snake eel (Brachysomophis henshawi), head sticking out of gravel. Pantar, Alor Archipelago, Indonesia.
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David Hall / Blackfoot firefish (Parapterois heterurus), blue stripes on pectoral fin when threatened, on gravel. Pantar, Alor Archipelago, Indonesia.
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David Hall / Barred conger eel (Ariosoma fasciatus) head poking through gravel. Pantar, Alor Archipelago, Indonesia.
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David Hall / Blackfoot firefish (Parapterois hetururus) on gravel. Pantar, Alor Archipelago, Indonesia.
01632858
Fabio Pupin / Viperine water snake, (Natrix maura), basking on river gravel, Spain, June . Non-ex.
01630930
Duncan Murrell / Stratified cliffs of sandstone, river gravel, pumice and silt, originally deposited between 300,000 to 1 million years ago at Cape Kidnappers, Hawke's Bay, North Island, New Zealand.
01624560
Nick Hawkins / Atlantic salmon (Salmo salar) male over spawning gravel Quebec, Canada. October.
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Nick Hawkins / Atlantic salmon (Salmo salar) male over spawning gravel Quebec, Canada. October.
01618057
SCOTLAND: The Big Picture / Section of River Feshie that has cut through forest resulting in gravel banks, tree debris and woodland pools. Glenfeshie, Cairngorms National Park, Scotland, UK.
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SCOTLAND: The Big Picture / Section of River Feshie that has cut through forest resulting in gravel banks, tree debris and woodland pools. Glenfeshie, Cairngorms National Park, Scotland, UK.
01607221
David Fleetham / Saddleback clownfish / Yellowfin anemonefish (Amphiprion polymnus), female, breeding male and non-breeding males with host Leathery anemone (Heteractis crispa). Philippines.