Diving and Snorkelling
Time to explore Arran underwater

Many divers and snorkellers come to carefully explore the recovery of the Lamlash Bay No Take Zone and other extraordinary underwater sites in the South Arran MPA. We have gathered valuable information from local marine explorers for over 25 diving and snorkelling sites around the island for you to discover!

Observe seagrass beds in Whiting Bay, Kildonan or Pirnmill, often with nudibranchs, pipe fish or cat sharks and scattered starfish. There are maerl beds packed with fascinating little creatures, and kelp forests and boulders, with large purple urchins, blennies and wrasse. If you go out in late spring, the water may be colder but you’ll be rewarded with sightings of different types of eggs: cat shark egg cases, the highland dancer’s beautiful swaying spiral of eggs and jewel-like green leaf worm eggs placed on seaweed. You may also encounter blooms of baby jellyfish, which make you feel you are in outer space with hundreds of tiny beautiful spaceships, with bright pinks, whites and multicoloured fluorescent flashes.

COAST do not hire snorkelling or diving gear; basic mask, fins and snorkel can be purchased from Johnston’s Marine Stores in Lamlash, or Arran Active in Brodick.

We run seasonal snorkel taster sessions if you are keen to learn how to snorkel safely (check out our events page for available dates), or if you want to explore our favourite spots around the island, check out the Arran Snorkel Trail which COAST helped establish in partnership with the Scottish Wildlife Trust’s Living Seas Project.

There is also an Arran Snorkelling Facebook group for keen snorkellers. Get in touch with them if you are going out!

Explore our interactive map; click on the legend icon on the top left of the map to view all the details and photos available. To view in full screen, click the enlarge icon on the top right corner. Come and visit our Discovery Centre to find out more about these sites and how to access them.