Wreckage of the tugboat “Marialva”. Located off the mouth of the Douro River, on a sandy bottom, 25 meters deep. Very damaged and silted. Accessible only by boat.

Shipwreck of a freighter near the mouth of the Douro River, on a sandy bottom 14 meters deep with West-East orientation. Accessible only by boat.

The Charneca is a tugboat, wrecked at the entrance to the port of Leixões, next to the breakwater. The wreck is perched on a sandy bottom 14 meters deep with a north-south orientation. Accessible only by boat.

This is the wreck of a barge located off the Cabedelo sandbank, on the mouth of the Douro River. It is perched on a sandy bottom 10 meters deep with northeast-southeast orientation. This site is accessible by the beach or by boat.

Located next to Matosinhos Beach, this place is sheltered by the south pier of the port of Leixões. The site consists of rocks next to the pier, predominant sand bottom, and depths that can vary between 2 and 7 meters. Accessible by beach or boat.

Olo is a high rock located off the breakwater of the port of Leixões. The base of the rock is close to 19 meters and the top is around 10 meters. It is accessible only by boat.

The wreck of this barge rests at 27 meters deep on a sandy bottom. Located off the mouth of the Douro River, approximately 3 nautical miles from land, and is accessible only by boat.

Pêlo Negro is a high rock located off the beach of Leça da Palmeira, 5 minutes from the marina of Leixões. The base of the rock is close to 20 meters and the peak is around 8 meters. Accessible only by boat.

The MV Reijin with a crew of 22 men, sailed under the Panamanian flag and made its first big trip. The ship had left Japan and had already unloaded 250 cars in Leixões. It ran aground in the early morning of April 16, 1988, due to an unbalanced cargo.

Shipwreck located south of the mouth of the Douro River, off the beach of Madalena. Sand bottom with a maximum depth of 21 meters. Accessible only by boat.