Hawaiian Islands Humpback Whale National Marine Sanctuary is one of the Hawaii parks in thicket's catalog. thicket is a field guide to the parks near you: it maps the ones you have never noticed, gives you a reason to actually go, and keeps a record of where you have been.
Where it is
Hawaiian Islands Humpback Whale National Marine Sanctuary is in Kauai County, Hawaii. Its approximate coordinates are 22.24071, -159.48136.
Check in at Hawaiian Islands Humpback Whale National Marine Sanctuary
thicket verifies you are actually here by GPS when you check in, so a visit means you went. Checking in builds a streak, earns achievements, and fills in your map of the places you have been.