The fishing shelter of Ágios Serafeím is fronting the homonymous settlement. The shape of the fishing shelter is irregular, due to its anti-silting protection system.

The fishing shelter is built at a distance of 140 m from the shore, with which it is connected through a bridge. Its entrance is facing southwest and its opening is approximately 20 meters long. The ruins of the ancient city of Thrónion stand south of the fishing shelter.