Male grey seal defending territory, Donna nook © Karen-Jane Dudley/shotbywomen

Female grey seal portrait, Donna Nook, North Lincolnshire © Karen-Jane Dudley/shotbywomen

Eurasian otter portrait © Karen-Jane Dudley/shotbywomen

Grey seal portrait © Karen-Jane Dudley/shotbywomen

Grey seal pup portrait, Donna Nook © Karen-Jane Dudley/shotbywomen

Starfish skeleton sitting on rocks with seaweed © Tracy Collyer/shotbywomen

Tentacle-like tube legs feel their way along the sea floor to move the spiny starfish around. The spines on the arms give this starfish its name. © Saskia Sichermann/shotbywomen

The white arms of a spiny starfish wrapping around the base of a sea weed. © Saskia Sichermann/shotbywomen

Hidden behind a flap of sea weed a spiny starfish wraps its arms around the stalk of a sea weed. The spikes on its body give the spiny starfish its name. © Saskia Sichermann/shotbywomen

During night pufferfish rest on coral and in nooks. This particular fellow sleeps on an exposed bit of coral on the sandy ground of the Red Sea. © Saskia Sichermann/shotbywomen

The white arms of a spiny starfish wrapping around the base of a sea weed. © Saskia Sichermann/shotbywomen

The white arms of a spiny starfish wrapping around the base of a sea weed. One piece of sea weed covers half of the frame. © Saskia Sichermann/shotbywomen

Tentacle-like tube legs feel their way along the sea floor to move the spiny starfish around. The spines on the arms give this starfish its name. © Saskia Sichermann/shotbywomen

Sea lions on the harbour wall, Monterey, California. © Annie Green-Armytage/shotbywomen

Sea lions on the harbour wall, Monterey, California. © Annie Green-Armytage/shotbywomen

Sea lions swimming next to the harbour wall, Monterey, California. © Annie Green-Armytage/shotbywomen