Dive into Hilo’s unique brackish waters with Hilo Ocean Adventures’ two-tank shore dive. Encounter sea turtles, manta rays, and vibrant coral reefs on this guided underwater journey.
More ways to explore the area's outdoor wonders
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Difficulty
moderate
Duration
4 hours
Fitness Level
Participants should be in good physical condition and able to carry 50 lbs of equipment and swim unassisted.
Wildlife
History
The East Hawai‘i coast near Hilo holds cultural significance for native Hawaiians, with sea turtles considered ‘aumakua (family guardians).
Conservation
The area’s brackish waters help protect coral reefs from bleaching, and local operators like Hilo Ocean Adventures prioritize sustainable diving practices to preserve these habitats.
Hilo Ocean Adventures
Dive into Hilo’s unique brackish waters with Hilo Ocean Adventures’ two-tank shore dive. Encounter sea turtles, manta rays, and vibrant coral reefs on this guided underwater journey.
Hilo Ocean Adventures is a Hilo, Hawaii-based ocean activity operator offering a diverse selection of guided and rental experiences designed for visitors and locals. Trips include private big game fishing charters in Hilo Bay with a professional crew focusing on mahi mahi and ahi tuna, kayak rentals and guided paddles on the Wailoa River and Hilo Bay, surfboard and boogie board rentals, one-tank boat dives to explore tropical reefs, and cultural and scenic cruises such as the Cliffs of Hawai’i Onomea Waterfall Cruise. Seasonal event cruises include front-row 4th of July fireworks cruises and a festive New Year’s Eve cruise from Wailoa Boat Harbor. Kayak options range from self-guided three-hour rentals to 2-hour guided routes like the beginner-friendly Wailoa River paddle to the King Kamehameha Statue, the Hilo Bay and Coconut Island guided tour led by a knowledgeable local guide (limited to six guests), and the Myths & Legends Waterfall Adventure that covers roughly 2.5 miles and highlights Wailuku River waterfalls.
Safety and guest comfort are emphasized with complimentary life vests and maps for kayak rentals, snacks, drinks provided on select charters, and certified crews or dive professionals on boat trips. Fishing charters note sustainable practices to minimize local impact. Clear departure points near Wailoa Boat Harbor and a focus on local history, marine life, and experienced guides make Hilo Ocean Adventures a trusted provider of ocean experiences in Hilo.
Location
Hilo, Hawaii
Departures near Wailoa Boat Harbor
Tours Offered
10
Guided trips and rentals available
Small-Group Option
6 guests
Limited group size on select tours
Trip Lengths
1–3+ hrs
One-hour cruises to multi-hour rentals
Reserve private charters, guided kayaks, dives, and holiday cruises — departures commonly leave from Wailoa Boat Harbor.
Arrive Early for Gear Fitting
Show up at least 30 minutes early to ensure proper rental gear fitting before your dive.
Bring Reef-Safe Sunscreen
Use reef-safe sunscreen to protect marine life and prevent coral damage before and after your dive.
Stay Hydrated
Hilo’s tropical climate means hydration is key—drink plenty of water before and after diving.
Know Your Certification Level
Certified divers must bring proof; uncertified divers must complete mandatory instruction and medical forms in advance.
Wetsuit
Provides thermal protection in cooler ocean temperatures especially during winter months.
winter
Dive Computer
Helps monitor depth and time underwater to ensure safe diving limits.
Underwater Camera
Capture vibrant sea life and coral in this unique brackish environment.
Reef-Safe Sunscreen
Protects skin and the delicate coral ecosystem during surface intervals.
summer