Due to water’s high specific heat, water transports a large amount of energy. In fact, the Gulf Stream alone transports more than 100 times the world's energy demand.
Remember that the Moon takes 24 hours and 50 minutes to rotate once around the Earth, so the Moon is over the same location every 24 hours and 50 minutes. Since high tides occur twice a day, one arrives each 12 hours and 25 minutes.
Look to the roots of the words if you ever get confused about which zone is which! “Photic” comes from the same root as “photosynthesize.” “Intertidal” means that it is in between the high and low tides.