Runswick Bay MCZ is protected for its rocky shores and sediments, creating rich habitats for marine wildlife
The rock and sediments within the Runswick Bay MCZ create complex habitats for a range of marine wildlife. As the tide recedes, extensive rocky shore communities are revealed, with large kelps and seaweeds towards the lower shore.
In deeper waters, the sandy seabed interspersed with rocks and boulders, provides perfect habitat for commerically-important crabs, lobsters and numerous fish species. The ocean quahog, a cockle shaped bivalve which can live for hundreds of years, is also found within the site.