Celtic Deep

Based in Lawrenny, Celtic Deep operates as a social enterprise led by marine conservationists and experienced freedivers. They focus on providing low-impact wildlife experiences that prioritise the connection between people and the iconic marine life of the Pembrokeshire coast.

Their trips are designed for those seeking more than a standard tour, offering encounters with some of the UK's most significant marine megafauna. Whether you are looking to observe bluefin tuna in the open ocean or snorkel with grey seals around the islands, the focus remains on purposeful, mission-led exploration.

The team is composed of marine conservationists and professional freedivers who integrate research and community outreach into their daily operations. This expertise ensures that every trip serves as a platform for impactful marine study and conservation awareness.

Safety and professionalism are central to their service. All boat crew hold valid First Aid certificates, and skippers are professionally qualified. The vessels are inspected by the Marine Coastguard Agency and licensed to MCA code of practice MGN 280, ensuring they are capable of carrying 12 passengers up to 60 miles offshore.

Celtic Deep offers specialised training in freediving, catering to those looking to develop their breath-hold capabilities and underwater movement.

Beyond freediving, the centre provides various opportunities for snorkellers to explore the local marine environment through guided wildlife encounters.

The centre operates vessels coded for 12 passengers, specifically designed to handle offshore trips up to 60 miles from the coast. These boats are equipped with safety gear that meets and exceeds legal requirements for the area.

Depending on the specific itinerary, trips may depart from Neyland Marina, Dale Harbour, or Tenby Harbour. For those heading to the islands, the boats provide access to Skomer, Skokholm, and Lundy Island.

Full equipment hire is available for those not travelling with their own kit. This includes wetsuits, masks, snorkels, and fins. For those needing additional items, they also provide gloves, socks, hoods, and weight belts.

Specific freediving wetsuits are also available for hire to suit the requirements of breath-hold diving.

The open ocean and island waters host a variety of iconic marine megafauna. You may encounter blue sharks, whales, dolphins, and large bluefin tuna during offshore trips.

In the island environments, Atlantic grey seals are a primary attraction, particularly during their breeding season from August to November. If visiting between April and July, you will also find significant colonies of puffins.

For those interested in the smaller inhabitants of the Pembrokeshire coast, the area supports a diverse range of marine life including various seabirds and resident seal populations.

Trips are subject to weather and sea conditions, and the centre reserves the right to relocate or reschedule trips to ensure safety. These excursions are noted as being more physically demanding than typical wildlife tours.

Due to the nature of open ocean and island trips, participants must declare any medical conditions. A doctor's note is required for certain cardiovascular, neurological, or bone and back conditions.