Hiiumaa

Guntars Mednis / Wikimedia Commons (CC BY-SA 3.0)

The waters surrounding Hiiumaa Island are a legendary graveyard of the Baltic Sea, containing dozens of protected historic shipwrecks ranging from 19th-century merchant sailships to wartime vessels. Scuba divers navigate remarkably well-preserved wooden decks, masts, and cargo holds resting on sandy bottoms. It is Estonia's premier destination for serious historical wreck diving.

Access. Organized liveaboard and day-boat dive excursions depart from ports on Hiiumaa or the Estonian mainland, requiring advance booking with certified technical or recreational dive operators.

Notes. Depths vary widely from 15 to 40 meters. Strict heritage protection laws apply to artifacts; no-touch policies are enforced.

Harju County

Dmitry G / Wikimedia Commons (Public domain)

Located in the waters of Tallinn Bay, the Jandels is a popular historic shipwreck resting on the sandy seabed. Scuba divers explore the deteriorating wooden and metal hull remnants which now serve as artificial reefs attracting schools of perch and flatfish. It provides an engaging dive into the maritime history of the Baltic Sea.

Access. Local dive operators and boat charters operate out of Tallinn's yacht harbors, running daily dive excursions to the bay's wrecks.

Notes. Depths average 15-22 meters with variable visibility depending on Baltic winds and plankton blooms.

Lääne County

Doricono / Wikimedia Commons (CC BY-SA 3.0)

Osmussaar Island sits in the Gulf of Finland, surrounded by dramatic underwater limestone cliffs, boulder fields, and historical wrecks. Scuba divers are drawn to the pristine marine environment, exceptional relative visibility, and the geological formations shaped by ancient meteorite impacts. Seal encounters are a frequent highlight during dives around the island's reefs.

Access. Reached via specialized dive boat charters departing from northwestern Estonian ports such as Dirhami when weather permits.

Notes. Exposed location prone to strong winds and currents; suitable for intermediate to advanced divers equipped with drysuits.

Pärnu County

Tuderna / Wikimedia Commons (CC BY 3.0)

Paatsalu Bay on Estonia's western coast features shallow coastal wrecks and sheltered marine ecosystems. Scuba groups explore preserved wooden sailing vessels and minor cargo wrecks embedded in the silty seafloor. The calm conditions make it a favored spot for training and light wreck exploration.

Access. Bookings and boat support are available through regional coastal dive clubs operating in the Pärnu County area.

Notes. Depths are shallow, typically between 6 and 14 meters, with low risk of heavy currents.

Harju County

Janno Kusman as flickr user jannok / Wikimedia Commons (CC BY-SA 2.0)

Submerged Soviet-era prison buildings, heavy machinery, and an underwater forest make Rummu Quarry one of Estonia's most unique freshwater dive sites. Visibility is exceptionally clear, often reaching up to 10-15 meters, offering eerie structural penetrations and swim-throughs. Divers come for the otherworldly sunken ruins and surreal underwater landscapes.

Access. Dive centers based in Tallinn offer guided trips, gear rentals, and boat support directly to the quarry site during the summer season. Advanced Open Water certification is recommended for deeper structural exploration.

Notes. Depths reach up to 12 meters; best visited between June and September when water temperatures are mild. Entry permits and site fees apply.