The U-1277 is a German submarine from World War II located in a North-West direction from Oporto, off Cabo do Mundo, 10 minutes away from Leixões marina. Laying on a sandy bottom 31 meters deep, it lays to the port side about 45º, with the bow pointing southeast. The wreck is accessible only by boat.

Prego is a high rock located off Angeiras, with the sand bottom at about 20 meters and the peak around 9 meters deep. In the rock, there is a crack that resembles a nail and gives name to this submerged rock. 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.

Old shipwreck located off S Paio, Vila Chã. Perched on a sandy bottom 33 meters deep, it provides the opportunity to observe different types of cannons and mortars from the 19th century. Accessible only by 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.

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.

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 trawling vessel located northwest of the Guilhada rock, Mindelo. She is on a sandy bottom, leaning against a stone, tumbled to starboard 27 meters deep. This site is accessible only by boat.

Located in front of the Carreiros jetty, accessible by the beach or by boat. The bottom morphology varies between rocks and sand passages. The depths can vary between 3 and 20 meters depending on the distance to the coast.

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.