Astronauts in the Ocean

In the year 2067, when earth finds itself in a drought that threatens humanity as a whole, 6 brave explorers find themselves in space. Sent by IAAO (International Aquatic Astronaut Organization) to find water on a foreign planet, their massive ship found itself on a planet that fit their exact needs. The problem: they were stranded on said planet. Filled with « flying » creatures that mimicked the aquatic wildlife of their home planet, the group can't help but be confused. How did these creatures get here? What other mysteries lie here? They'll find out soon enough...