Highest average quality score among Oahu providers: 89.3/100. Six focused tours — dolphin watches, fishing, snorkel. Small operation that does a handful of things extremely well.

Diamond Head, Hanauma Bay, Manoa Falls — they handle the transport and logistics that trip up independent visitors. Six tours averaging 88.2/100.

One of Oahu's most prolific operators — 27 tours averaging 87.9/100. Bikes, boats, hikes, kayaks, snorkel, and food tours. They cover more ground than almost any other provider on the island.

Smaller groups, more water time, flexible itineraries that adjust based on conditions. Six tours out of Honolulu, every single one scoring 85+.

Catamaran tours from Waikiki and Ko Olina — two departure points give access to different coastline. Top four tours all score 94+. Dolphin watches, snorkel, and sunset sails.

Legacy tour operator running guided excursions across the islands for decades. 23 tours out of Honolulu covering air activities, bus tours, history walks, and boat trips.

Right on the sand in front of the Royal Hawaiian and Moana Surfrider. 14 offerings including surf lessons, SUP, and outrigger canoe rides. Their top experiences hit 99/100.

One-stop shop for Kailua Bay water sports since the windward coast tourism boom. Kayaks, SUP, bikes, snorkel, surf lessons — 10 offerings averaging 84.2/100.

Honolulu-based dive operation covering first-timer reef snorkels to advanced wreck penetration dives. 13 tours averaging 83.8/100 with strong scuba certifications.

Built around a volcanic crater in Kapolei. Ziplines, ATVs, ropes courses, and SUP. 14 experiences for the adrenaline crowd who want more than beach time.