海底郵筒

Sea bottom post is a local dive site whose name translates to the underwater mail post. It is a shallow site typical of nearshore environments, often accessed quickly from the coast. The site description should reflect the local underwater topography and access considerations rather than sensational claims. Nearby towns indicate easy reach for shore excursions or short boat trips, with divers commonly practicing entry-level skills in calm conditions. Expect a straightforward reef or rocky seabed with modest currents in some conditions and typical nearshore marine life for the region. This site is well-suited for beginners and for refresher dives, with the option to combine it with other nearby local dive spots for a longer half‑day dive plan.