We saw them in the afternoon twice. You can see them in the water and then watch them come ashore. You do have to watch as they blend in. I had to tell a woman who was on her phone that a huge turtle had swum up and come onto the beach less than 20 feet from her. There is a beach about 10 km back towards Honolulu that seems to have them everyday- they also have volunteers on the beach to keep people from getting too close- some idiots even stand on them for "selfies". So you could go between the two beaches if you have a car.

Hawaii is beautiful all year round but the water is much calmer in the Summer months on the North Shore of Oahu. If you go in their Winter ( I think Dec-Feb ) the beaches on the North Shore are very rough and dangerous for swimmers

Hi! There is no sea glass or shells for that matter, at the beach in Turtle Bay.

No, all beaches in Hawaii are public access. The Turtle Bay Resort has plenty of parking spot for beach goers.

and YES! The beach is public and there is a outdoor cabana where you can rent snorkeling and various beach gear.

There is a great town called Haliewa just outside Turtle Bay so make sure you go there. Great shopping and restaurants. All the food trucks along the highway are excellent but make sure to visit Ted's Bakery. It's not just a bakery- they have killer sandwiches all on their own fresh bread. You should really rent a car. So much to see. I don't have small children but there were plenty of kids at the resort and there is a kiddie pool.

Pa Akai is a great restaurant in the resort and the food is outstanding. There really aren't any fancy restaurants on that side of the island I'm aware of. Check Trip Advisor?