SCOTLAND: The Big Picture / Hydroids (Nemertesia ramosa) on reef with fish swimming in plankton bloom in background, South Arran Marine Protected Area, Isle of Arran, Scotland, UK, August.

SCOTLAND: The Big Picture / Plumose anemone (Metridium senile) and hydroids (Nemertesia ramosa) with fish swimming in plankton bloom in background, South Arran Marine Protected Area, Isle of Arran, Scotland, UK, August.

SCOTLAND: The Big Picture / Edible crab (Cancer pagurus) sitting between hydroids (Nemertesia ramosa) and Plumose anemone (Metridium senile) with fish swimming in plankton bloom in background, South Arran Marine Protected Area,...

SCOTLAND: The Big Picture / Common sunstar (Crossaster papposus) amongst hydroids (Nemertesia ramosa) and Jewel anemones (Corynactis viridis) with fish swimming in plankton bloom in background, South Arran Marine Protected Area,...

SCOTLAND: The Big Picture / Common sunstar (Crossaster papposus) amongst hydroids (Nemertesia ramosa) and red algae with plankton bloom in background, South Arran Marine Protected Area, Isle of Arran, Scotland, UK, August.

Graham Eaton / Sea beard hydroid (Nemertesia antennina) Cardigan Bay, Wales, UK. April.