Dive beyond the usual in Hawaii with Fathom Five. Three guided dives off Niihau offer crystal-clear waters, vibrant reefs, and an exclusive boat experience from Koloa.
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Difficulty
challenging
Duration
11 hours
Fitness Level
Participants should be in good physical condition, comfortable with multiple deep dives and extended surface intervals.
Wildlife
History
Niihau is a privately owned island with restricted access, preserved to protect its natural environment and cultural heritage.
Conservation
Fathom Five emphasizes sustainable diving practices, including reef-safe sunscreen use and strict adherence to no-touch policies to protect fragile reef ecosystems.
Fathom Five Divers
Dive beyond the usual in Hawaii with Fathom Five. Three guided dives off Niihau offer crystal-clear waters, vibrant reefs, and an exclusive boat experience from Koloa.
Fathom Five Divers is a Kauai-based dive operator located in Koloa, Hawaii, offering guided snorkel tours, shore dives, boat dives, and introductory SCUBA experiences. The company focuses on small-group instruction, personalized attention, and high-quality equipment to help guests explore Hawaii’s marine ecosystems safely and confidently. Trips range from guided snorkeling at Koloa Landing to multi-tank boat dives and specialty excursions exploring remote sites such as Niihau, the island commonly referred to as the "Forbidden Island."
Instructors and guides provide pre-dive briefings, equipment support, and situational guidance tailored to varying skill levels, from first-time Discover SCUBA participants to certified divers seeking multi-tank adventures. Fathom Five’s boat operations include a custom approach to Hawaiian waters, with a noted 6-pack boat operation used for many boat dive trips and access to numerous local dive sites.
Safety protocols, clear briefings, and condition-based decision-making are emphasized across shore and boat programs. Discover SCUBA options state a lower age limit for participation, and many shore dives are described as suitable for divers of all skill levels. Tour offerings include daylight and twilight/night options, shore and boat formats, and both single- and multi-tank schedules. Visitors looking for guided snorkeling or structured dive experiences in Koloa can choose from a diverse set of trips matched to skill level, time available, and interest in local marine life and topography.
Location
Koloa, Hawaii
Launches and shore dives from Koloa.
6-Pack Boat
Customized 6-pack
Dedicated boat for Hawaiian waters.
Dive Sites
20 sites
Access to 20 distinct dive locations.
Discover SCUBA
Ages 10+
Intro dives available for ages ten and up.
Reserve a guided snorkel, shore dive, or boat dive with Fathom Five Divers and experience Koloa’s underwater landscapes with expert instruction and quality gear.
Book Early for Limited Spaces
Trips run only Mondays and Thursdays mid-May to September with limited diver capacity; secure your spot well in advance.
Be Prepared for a Full Day
The entire adventure takes about 11 hours, so bring a change of clothes and be ready for an active day on the water.
Certification Required
All participants must be certified divers aged 15 or older; refresher courses are available for those who haven’t dived recently.
Pack Reef-Safe Sunscreen
Protect yourself and Hawaii’s delicate reef ecosystems by using only reef-safe, biodegradable sunscreen during surface intervals.
5mm Wetsuit
Provides thermal protection for prolonged dives in Hawaiian waters, especially at deeper depths.
summer
Mask, Fins & Snorkel
High-quality, well-fitting gear enhances comfort and underwater visibility.
Reef-Safe Sunscreen
Protects your skin while preserving delicate coral reef ecosystems during surface intervals.
summer
Dive Computer
Helps monitor depth and dive time for safe ascent profiles on multi-tank days.