The twin peaks of Moku Nui and Moku Iki rise 2.4 kilometers offshore from Kailua Beach, their 62- and 46-meter summits marking the boundary between the open Pacific and the protected waters of Windward Oahu. Both islands have been designated state seabird sanctuaries since 1982, sheltering nesting colonies of wedge-tailed shearwaters, brown noddies, and red-tailed tropicbirds within ironwood groves and rock crevices inaccessible to terrestrial predators. The channel crossing requires paddlers to navigate tidal currents that shift direction every six hours, accelerating to 1.2 knots during spring tides when the moon's pull aligns with the Pacific's westward drift. Moku Nui, the larger and only landable islet, permits visitors on its southern crescent beach under a state conservation permit that caps daily arrivals at 150 persons and prohibits access to the interior vegetation zone where burrow-nesting shearwaters incubate eggs from April through November. The 3-dollar landing fee, collected at the beach launch point, funds monitoring patrols conducted twice weekly by the Division of Forestry and Wildlife. Snorkeling the reef shelf along Moku Nui's western flank reveals cauliflower coral formations and green sea turtles that graze on limu kohu seaweed beds replenished by nutrient upwelling from the Molokai Channel. Morning departures between eight and eleven o'clock exploit the prevailing northeast trade winds, which blow offshore until midday before reversing into onshore gusts that roughen the channel surface and complicate the return paddle. Kailua Beach serves as the sole permitted launch site, its gently sloping sand and absence of fringing reef offering the safest entry for tandem kayaks carrying snorkel gear, dry bags, and the reef-safe sunscreen required under Hawaii's 2021 marine protection statute. The crossing takes 35 to 50 minutes depending on paddler fitness and current phase, with the final approach threading a narrow gap between submerged basalt boulders that mark the edge of Moku Nui's 12-meter depth contour. Rental operators based along Kailua Road supply sit-on-top ocean kayaks engineered with scupper drains and bow storage hatches, their polyethylene hulls shaped to track straight in crosswinds without the skeg fins that snag on shallow coral. The islands' designation as a Hawaii State Seabird Sanctuary prohibits camping, fires, and the introduction of any food item that might attract rats or feral cats to the fragile nesting habitat.