"Pavlopetri: A prehistoric submerged city" offers a comprehensive analysis of the oldest known underwater city in the world, which emerged 5,000 years ago in the region of Laconia, Greece. This unique city, covering an area of 80,000 square meters, is characterized by its remarkable urban planning, which includes public buildings, monuments, squares, and two-story residential houses surrounded by gardens. A complex water management system and a cemetery testify to the advanced civilization that lived here. The book explores the development potential of dive tourism in Pavlopetri and the surrounding region of the Peloponnese. Through a SWOT analysis, it assesses the strengths, weaknesses, opportunities, and potential threats to the region's tourism industry. Interviews with local authorities and professionals provide insights into residents' perceptions regarding the improvement and diversification of the tourism offerings.