This study proposes and develops a hybrid type of Nanogenerators (NG) with unimorph-based piezoelectric nanogenerator (PENG) and folded triboelectric nanogenerator (TENG) called hybrid PENG-TENG. Firstly, vibration tests were conducted to investigate PENG-TENG's fundamental characteristics under several conditions: the initial distance between materials, vibration frequency, and amplitude. We used some key parameters, such as aspect ratio, connection setup between hybrid devices, and initial distance, to obtain high electric performance and high efficiency. We found that both PENG-TENG were able to complement each other to generate output voltage, and both vibration frequency and initial distance play a major role in improving high electrical output voltage. PENG-TENG should be improved and optimized to apply and performed as field tests in the real ocean to demonstrate its real potential.