We went to Laniakea Beach on our North Shore day. It's a convenient stop if you're going to the North Shore or Waimea Valley, but I would not make a special trip there just for it. It's a small, rocky beach and it's VERY crowded. Tons of people, small parking area, difficult to get down to the beach due to the terrain. When we were there, there was one large turtle with people crowded around. No room for swimming or hanging on the beach there either, really. Worth a stop if you're in the area, but I wouldn't go otherwise.