The paper aim is to get more actual data concerning the natural radioactivity of the Black Sea Western Shore between the city of Sf. Gheorghe (Romania) and Resovo river (Bulgaria). In the case of terrestrial ambient dose rate distribution, measurements between Vama Veche in South and Chituc sandbank in North gave, with some notable exception, values between 34 and 54 nSv/h, lower than 90 nSv/h, which is the average value for Romania. The experimental determined dose rates increase northward, reaching a maximum in the vicinity the Chituc sandbank, i.e. at the Vadu and Corbu beaches, where due to the presence of black sands with monazite and zircon, the ambient dose rate reached up to 200 mSv/h. A total different situation was evidenced in the case tritium in sea water. In the close vicinity of Danube Delta, the tritium activity concentration in the surface water was around 28 TU, which is almost the same as that of the Danube River waters, but it decreased to about 5 TU in the bottom water. This discrepancy slowly diminished wherein at about 120 km southward, the tritium content in both surface and bottom water reached almost the same constant value of 6.5 ± 2.3 TU. This value, about two and a half times smaller than that reported 17 years ago, remained almost unchanged for the last 240 km of shore up to the Turkish border.