Anini beach is a narrow reef protected beach that stretches for over 2 miles. The reef at Anini is one of the largest in Hawaii but snorkeling is fairly poor because of plankton and other ocean debris.
Because of the extensive reef, Anini has the calmest ocean conditions on the north shore and is one of the few beaches that can offer swimming during large winter waves. Some exploration is in order to find the stretch of beach that most appeals to you. The best snorkeling is in the area around the boat ramp and widest section of beach (see the aerial photo).
TIP: Anini will usually have warmer water than other north shore beaches especially in shallow areas like the eastern most section (shown in the first photograph). To get to this section, look for a small parking area as you enter the main residential road. Theres a difficult to notice path hidden under dense foliage that takes you to a supreme section of beach.