Hawksbill turtle swimming towards camera with diver in the background - Mexico - Susanne Skyrm / Marine Photobank

Two rays drowned by getting trapped in an abandoned fishing net - Virginia - Susanne Skyrm / Marine Photobank

Starfish surrouded by balloon debris - California - Stephanie Lennox / Marine Photobank

Weedy seadragon - Victoria, Australia - Richard Wylie / Marine Photobank

Schooling fish around a pier for protection - Victoria, Australia - Richard Wylie / Marine Photobank

Aquaculture and tourism - Sardinia, Italy - Sarunas Zableckis / Marine Photobank

Daisy parrotfish showing its powerful coral-crushing beak