Get a grandstand view of the world beneath Sal's waters on this trip. Your craft is the bright yellow Neptunus, which is styled like a submarine, but more like a glass-bottomed boat. Its lower deck is wall-to-wall windows that let you peer right out into the crystal-clear Atlantic. We'll whisk you to Santa Maria bay, where you'll go aboard, meet the Neptunus captain, and sail out into the ocean. Then, you'll have an hour to watch the undersea show, snapping photos of all the goings-on. Cue acres of exotic flora and swaying sea grass. Sashaying shoals of bream and rockfish. And if you're lucky, moray eels, puffer fish, trumpet fish, stingrays and turtles. Oh, and you'll even get close up to a spooky shipwreck. And if you fancy a breather at any point, you can head for the upper deck to soak up the sunshine and panoramic views over Sal's coast.