Geopark Snorkel Safari

Step off the shore and into a world of ancient geology and vibrant marine life. The Geopark Snorkel Safari is a guided underwater expedition that shows off the biodiversity of the Mourne coastline. It takes place in the sheltered, clear waters of Greencastle Beach, on the County Down side of Carlingford Lough.

Glide over kelp forests, find hidden rocky reefs and learn about the ecosystem of the Mourne Gullion Strangford UNESCO Global Geopark. An expert Oceanauts guide leads the way, and you don't need a tank to enjoy it.

How it works

1. Briefing & gear fitting
   Meet your guide on the shore for a safety briefing. You are fitted with a mask, snorkel, fins and a 5mm/7mm wetsuit to keep you warm.
2. Snorkel skills
   Learn proper snorkelling technique, including buoyancy control and mask clearing, so the safari feels effortless.
3. The safari
   Follow your guide over the reefs and kelp, looking for colourful anemones, crabs and the local fish hiding among the rocks.
4. The Geopark story
   Your guide knows the coast and explains the geology and history of the underwater landscape as you go.

What's included

• Mask, snorkel and fins
• A 5mm/7mm wetsuit
• A certified Oceanauts guide who knows the Geopark's marine life
• A full safety briefing, support in the water and student insurance

The minimum booking is 4 people. Oceanauts also run a private safari for 2 people and a family safari for 2 adults and 2 children (ages 10–16). Get in touch if you would like one of those.

Oceanauts are based at Greencastle on the County Down shore of Carlingford Lough, right opposite Carlingford. From the Cooley side, the Carlingford Lough Ferry crosses from Greenore to Greencastle in about 15 minutes. Driving round by Newry takes about an hour.