Dive-site story
Located off the south coast of Lanai, Knob Hill is characterized by dramatic volcanic architecture. Distinct basalt mounds and eroded lava ridges rise from a sandy seafloor, forming sheltered undercuts, short swim-throughs, and cavernous arches. Most divers access the site on charter boats departing from Maui or Lanai.
Volcanic lava tubes, arches, and undercut ledges
Frequent encounters with resting whitetip reef sharks
Cleaning stations frequented by green sea turtles
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Summer and shoulder months typically offer calmer sea conditions and lighter trade winds.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Whitetip reef sharkTriaenodon obesus | Common | ||||||||||||
| Green sea turtleChelonia mydas | Common | ||||||||||||
| Yellowmargin morayGymnothorax flavimarginatus | Common | ||||||||||||
| Day octopusOctopus cyanea | Common | ||||||||||||
| Milletseed butterflyfishChaetodon militaris | Common |
Marine forecast
