Although Sentosa's blockbuster S.E.A. Aquarium trumps Underwater World in the aquarium stakes, Underwater World remains popular for its 30-minute Dive with the Sharks experience ($120 per person, bookings essential). Entry to the aquarium includes admission to next-door Dolphin Lagoon, where Indo-Pacific humpbacked dolphins (aka pink dolphins) perform with seals. Marine mammal performances have received criticism by animal welfare groups who claim the captivity of marine life is debilitating and stressful for the animals, and that this is exacerbated by human interaction.
