Drink The Water - Alien Mysteries, #3

Don't go near the water. On a distant planet, xenobiologist Janine Meriwether finds herself haunted by a recurring dream: being dragged to her death by the Nartressan seaweed. Soon, she learns of three others - a traumatized emergency responder, a troubled seafood mogul and a high-priced escort - who share the same nightmare. When they begin to investigate the origin of their dream, they discover an abandoned underground research station...
and set on a mission to unlock the terrible secrets hidden in the age-old facility.