Typical lagoons for Primorsko are : Ropotamo, Alepu, Arkutino and Stamopolu. The swamp is thick with swamp plantdation and its banks are not well outlined. Its depth is more than one meter, its bottom is covered in silt.
The limnetic pools are not poluted with chemicals. The main advantage of coastal waters is their higher temperature ( with 1-2 degrees) in comparison to the waters of the northern Black sea. Another pleasant factor is the low salinity of Black sea - 18 ppt., also the mild tides, and last but not least the absence of dangerous sea creatures.