Sandwiched between the Arctic and Pacific Oceans, Alaska is America's largest state and is the perfect destination for expedition voyages. It's a spectacular wilderness to see an abundance of wildlife and whale watching trips journey through some of the richest whale waters, home to over half the world's population of Humpback Whales. Stellar sealions, orcas and large bears are also regularly spotted. If you are looking for a dolphin-watching holiday, Pacific white-sided dolphins often entertain travellers with acrobatic leaps and somersaults from Alaska's ocean depths.