aerial closeup view of Dolphins swim close to Cascais beach, their silver bodies shining in the sun as they playfully leap through the clear waters

dolphins cascais beach swimming playful silver bodies sunlight waves shoreline crystalclear waters pod plumes of water graceful onlookers sand mesmerizing sight nature beauty delighted flurry of activity effortless grace boundless energy leap marine life ocean portuguese coast coastal scenery seaside tourists spectacular wildlife aquatic creatures marine mammals popular destination holidaymakers swimmers clear blue sky playtime joyful happiness coastal town atlantic ocean sunny day scenic view marine conservation environmental protection biodiversity ecosystem natural habitat