Barcelona is one of Europe´s most diverse cities, bringing together people from a wide array of cultures, styles and races. But if you take the time to look beyond its skyline and into the sea, another world of diversity will come alive before your eyes. Within barely two or three miles off the coast, dolphins and whales thrive in its Mediterranean waters. And all along Barcelona's coastline, an amazing universe of marine wildlife offers a wonderful spectacle to anyone willing to patiently stare into the blue. So next time you visit Barcelona, poke around our recommended activities to discover a new angle to this unique city and its surrounding landscapes.