When swimmers and surfers go home at night, denizens of near-shore reefs venture out of their lairs.
At the Waikiki Aquarium, adventurers ages 6 and up can wade into shallow waters just after sunset to look for crabs, lobsters, eels and octopuses.
Sleeping parrotfish and triggerfish sometimes float through the coral, and if you look very carefully, you might spot a day-active octopus asleep in its den.
Late fall through early spring