Prvic Tunnel, Kvarner Bay: Wall and Tunnel Diving

Located at the northern tip of Prvic Island, this site features a prominent rock through which a natural tunnel has formed. You'll generally begin your dive by descending to the tunnel's entrance, which sits at around 12 to 18 metres, depending on your approach. The tunnel itself stretches for approximately 25 to 35 metres, offering a comfortable passage with a diameter of about 3 metres. As you navigate this natural conduit, watch for the interplay of light from the shallower exit creating a serene atmosphere within the rock.

The tunnel's exit provides a seamless transition to a magnificent vertical wall, considered one of the most vibrant in the Kvarner region. This wall is a focal point for marine life, adorned with gorgonians and a variety of colourful sponges. You'll find groupers patrolling their rocky territories and various crabs hidden in the crevices, offering excellent opportunities for observing a diverse ecosystem. Swarms of smaller fish frequently animate the wall, adding constant movement and colour to your dive.

While exploring the wall's rich topography, watch the blue for larger pelagic species. The area is known for tuna (Thunnus spp.) sightings, particularly at the deeper parts of the wall. These encounters often occur as you transition from the confined space of the tunnel to the open expanse of the rock face, where currents can bring nutrients and, with them, larger predators. Maintaining situational awareness beyond the reef during this segment can be rewarding.

Beyond the main tunnel and wall, there's an optional exploration of the 'column cave.' This cave is situated about 40 metres opposite the rock with the tunnel. If your air consumption and bottom time allow after navigating the tunnel and wall, a visit here can extend your dive. The cave offers another perspective on the island's underwater geology and the species that adapt to these sheltered environments, typically featuring more sessile organisms.