Dive into adventure at the Marietas Islands! Swim, snorkel, kayak, and get a once-in-a-lifetime opportunity to see the humpback whales during their winter migration. Bay of Banderas is a natural sanctuary for a profusion of sea life. Climb aboard our comfortable catamaran and watch for humpback whales, giant manta rays, tropical fish and wild dolphins as you cruise toward the Marietas. Swim, snorkel and explore the rocky caverns and archways on a guided tour. Witness the magnificent humpbacks soaring into the air and hear their hauntingly beautiful whale song.