The diving in Hawaii is surprisingly poor, especially in term of color, but also because there isn’t much there. If they spot so much as a sea turtle on a dive, they talk about how exciting it was.
I had been diving Guam, Palau, a LOT of Micronesia before taking a “vacation” in Hawaii. Diving in Hawaii sucks! Nothing but sand and occasional rocks and a few critters. And the water was COLD.