The ocean's chorus awaits on this whale and dolphin tour in Tenerife. Cast off on a boat trip off the coast of towering Los Gigantes cliffs, and it won't be long before you're gliding in prime dolphin, turtle, and even whale territory. Keep both your eyes and your ears peeled, with the help of a hydrophone on board and a knowledgeable crew. Eavesdrop on underwater sounds, from the chatter of dolphins to the echo-location clicks of hunting whales.