Karleyth Diving

Karleyth Diving is situated in the heart of the Roseland Peninsula at Chenoweths Business Park, near Truro. This location provides direct access to some of the most biodiverse coastlines in the United Kingdom, ranging from sheltered rocky reefs to deeper channel dives.

The name Karleyth, the Cornish word for ray, reflects a deep connection to the local marine life that defines this stretch of the Atlantic coast. Whether you are looking to start your training or are a professional diver seeking advanced certifications, the centre is positioned to explore the varied underwater topography of Cornwall.

The team at Karleyth Diving is composed of experienced instructors, divemasters, marine biologists, and underwater photographers. This diverse expertise means that training often includes a strong focus on marine ecology and the environmental importance of the habitats you visit.

As an SSI affiliated centre, they provide structured instruction for all levels, including a Kids Explorers Club for younger divers interested in snorkelling and marine biology. The centre maintains a welcoming, inclusive atmosphere for both recreational divers and those pursuing a professional career in the industry.

Karleyth Diving offers a comprehensive curriculum of SSI courses. Beginners can start with Try Scuba or the SSI Basic Diver programme, progressing through to the Open Water Diver and Advanced Open Water Diver certifications.

For those looking to specialise, the centre provides several specialty courses, including Enriched Air Nitrox, Deep Diver, Wreck Diving, and Drysuit Diving. They also offer technical and skill-based training such as the SSI Computer Diving, Science of Diving, and Perfect Buoyancy specialties.

Professional divers can pursue a career through the SSI Dive Guide and Divemaster programmes. The centre also facilitates the Open Water Instructor Course and offers intensive training options for those aiming for professional qualifications.

The centre is equipped to support both training and independent diving with reliable air and Nitrox fills available on-site. They also provide professional servicing for diving equipment to ensure your kit remains in good working order.

For those who do not have their own equipment, a range of kit is available for hire. The shop also stocks a variety of diving equipment for sale, and they offer a 'try before you buy' option for divers looking to upgrade their personal gear.

The waters around the Roseland Peninsula are rich with diverse marine life. You will regularly encounter various species of rays, including Thornback Rays, as well as Nursehounds and Cat sharks. Schools of Wrasse and Pollock are common inhabitants of the kelp forests and rocky outcrops.

The reef structures and kelp beds are home to a variety of crustaceans, such as Lobsters, Spider Crabs, and Edible crabs. Divers can also find Scallops and various species of crabs, including Masked Crabs, tucked into the rocky crevices.

For those interested in macro life, the area offers plenty of interest with Nudibranchs, Octopus, and Cuttlefish. You may also spot Squid and various jellyfish drifting through the water column.

The seagrass and eel grass beds serve as vital nursery grounds, where you can find smaller species such as baby fish, baby rays, and baby cat sharks. These habitats are essential for the local ecosystem and support a high density of marine life.

Diving in this area is influenced by the highly tidal nature of the local rivers and channels. At sites like Castle Cove, the tidal flow can be moderate, so it is important to be aware of the movement between high and low tide.

When diving in active working harbours like Portloe, understanding local boat movements and harbour conditions is essential for safety. The coastline offers a mix of sheltered shore entries and more exposed boat dives depending on the specific location and weather.