I can’t remember where and when I saw a kid riding his bike along the shore but the moment I saw it I said to myself, “That’s so cool!!! I have to do that.” When I rented out a bike for a day when I was out in Bantayan Island, I took it out to the shore. It was a bit of an effort getting the bike to the shore from the resort I was staying at because I had to cross a stream - there’s a sand bank, and my right slipper got caught with the incoming tide and I had to run after it. LOL. Pedaling was also harder because of the sand but it was a good ride. A really good ride :D
Edit: There was an area where there were bike tracks so I tried to follow that because I figured they rode on the more compact part of the shore, which is easier to pedal on.