Nick Upton / Rock goby (Gobius paganellus) stealing food from a scavenging Common prawn (Palaemon serratus) in a rockpool, Cornwall, England, UK, September.

Ingo Arndt / Bed of Blue mussels (Mytilus sp.) densely packed together on rock, Lamberts Bay, South Africa

Ingo Arndt / Brown / Grizzly Bear (Ursus arctos horribilis) tracks on tidal flats, Alaska, USA

SCOTLAND: The Big Picture / A family of otters rest on the intertidal seaweed. European river otter (Lutra lutra) Shetland, Scotland, UK, July.

Sean Crane / Bat Star (Asterina miniata) trio at low tide, Montana De Oro State Park, Los Osos, California

Orsolya Haarberg / Coastal rocks with algae and limpets, Tomma Island, Nesna, Helgeland, Nordland, Norway, July 2009

Christophe Courteau / Edible crab in tide pool split level {Cancer pagurus} Brittany France

Alex Hyde / Shore Crab (Carcinus maenas) against white background. From the Isle of Skye, Inner Hebrides, Scotland, UK.

Alex Hyde / Various rockpool animals and seaweeds, photographed on a white background. Isle of Skye, Inner Hebrides, Scotland, UK, March. Digital composite.

Alex Hyde / Sea Scorpion / Bullfish (Taurulus bubalis) against white background. From the Isle of Skye, Inner Hebrides, Scotland, UK.

Nick Upton / Split level view of a Beadlet anemone (Actinia equina) attached to a boulder encrusted with Maerl (Lithothamnion glaciale) a red coralline alga, in a large rockpool, Crail, Scotland, UK, July

Chris Gomersall / 2020VISION / Flock of dark-bellied brent geese (Branta bernicla) on foreshore, Snettisham RSPB reserve, The Wash, Norfolk, England, UK, January 2012