We were able to see not only turtles but also dolphins, and we were able to see Diamond Head from the sea, which was a wonderful memory.
You can especially get close to the turtles by snorkeling.
There is a clean toilet on the boat, but
after checking in at the dock,
you have to wait outside without a roof or toilet until you board the boat, so it might be a good idea to bring a hat or parasol for that time.
Wetsuits were available for rental,
but your own swimsuit and rash guard were enough.
When everyone gets tired and gets on the boat, they offer cold water and snacks like nut bars. Yuji and all the staff were kind and fun.