Wow! Dolphins in Gibraltar! Ok, I give up. Been to Gibraltar 6 times and never saw a Dolphin although there sure are monkeys. I suggest you Google the port and learn. As to Dolphins, the truth is that they can be anywhere in the ocean (and often are) and if you really want to see them up close and personal go to the Baltimore Aquarium. There is also excellent aquariums in San Diego and Genoa (its new and really nice). As to Gibraltar, enjoy the Rock, the monkeys, duty-free shopping, and the cafes.