Players take on the role of Greg or Mila to help their uncle save endangered marine species. Cruise around an undiscovered island and rescue hurt or sick sea animals. Explore the island to develop open space pools while respecting the environment. With the help of specialists, take care of and heal the many different animals before releasing them into the ocean. Save the endangered marine species and try to help the rarest of them all: the giant blue whale.

• Interact with new animals and endangered marine species such as sea lions, green turtles, sharks, and giant blue whales.
• Rescue animals directly from the sea. Use your boat to save wild endangered animals.
• Build an eco-friendly sanctuary for marine animals. Explore the island to develop open space pools that respect the environment.
• Take care of 11 different animals. Feed them, clean their pools, and play with them.
• Develop a strong relationship with dolphins. Swim with them in lagoons, interact with them while diving, stroke them, catch their attention, communicate with them using the DS microphone, and play balloons or hoops with them.