北区位于瓜纳哈的中心地带，为潜水员提供了无与伦比的水下探险机会，是潜水爱好者的首选目的地。这里的潜水环境独一无二，从迈克尔岩（Michael's Rock）错综复杂的火山岩到黑岩峡谷（Black Rock Canyon）令人惊叹的深海，应有尽有。在这里，潜水员可以探索迷宫般的裂缝、缝隙和洞穴，每个地方都充满了生机勃勃的海洋生物。该岛的水下景色堪称壮观，还有大自然历经数百年雕琢而成的隧道和拱门。 其中最引人入胜的景点之一--尖峰岛（The Pinnacle）以其丰富的珊瑚花园而闻名，潜水者可以在这里欣赏到各种色彩斑斓的珊瑚，包括难以捉摸的黑珊瑚。北区的潜水点通常需要乘船前往，提供岸潜和船宿潜水两种选择。从嬉戏的海豚到威风凛凛的鳐鱼，这里的海洋生物种类繁多，每次潜水都是一次难忘的海底探索。季节变化带来海洋生物的动态变化，让潜水者不断返回，见证北海岸不断变化的奇观。
关纳哈北岸全年都有良好的潜水条件，是潜水员的热门目的地。水温通常在 26°C-29°C/79°F-84°F 之间，为长时间潜水提供了舒适的环境。该地区的能见度通常很高，通常超过 30 米/98 英尺，让潜水者能够充分欣赏生机勃勃的海洋生物和珊瑚群。 虽然全年都可以潜水，但潜水者应注意季节变化可能会影响他们的体验。10 月到次年 1 月的雨季偶尔会降低能见度并增加水流。此外，2 月至 6 月的信风会更明显，可能会导致海面状况更加波涛汹涌。不过，这些因素很少会妨碍潜水活动，只要计划得当，潜水者在一年中的任何时候都能欣赏到瓜纳哈的水下美景。
Located on the north side of Guanaja, Spotted Bay offers a vibrant coral garden teeming with parrotfish, barracudas, and angelfish. This easy dive site is ideal for both scuba and freediving enthusiasts. It features stunning underwater rock formations and is part of a protected marine reserve.
The Jado Trader Wreck is a haven for advanced divers, with its sunken cargo ship attracting schools of jacks and snappers. This technical dive site is best explored with scuba gear and offers a fascinating glimpse into artificial reefs. Strong currents and depth require experienced divers.
Michael's Rock is perfect for both scuba diving and freediving, offering an easy to moderate adventure. The site is famous for its large barrel sponges and colorful coral formations. You can often spot sea turtles and eagle rays gliding through the waters.
Pelican Reef is a vibrant coral reef known for its rich biodiversity, including clownfish, moray eels, and octopuses. This easy-level scuba diving site offers breathtaking underwater scenery with its coral gardens and is part of a marine park dedicated to conservation efforts.
A dive site for the bold, Shark Plateau offers an advanced scuba diving experience. Divers can encounter reef sharks and nurse sharks patrolling the depths. The site features dramatic drop-offs and is known for its thrilling underwater topography and rich marine life.
