The Fulgur: Survivors of the Dark (The Fulgur #2)

Escaping the huge mosasaur, The Fulgur continues to explore the fantastical subterranean, prehistoric sea on which it is trapped. But the stubbornness of Kens to seek profit, the ambient gloom, and their forced confinement, put the team on edge. As the explorers press on, they discover an outcrop populated with strange plant life to be explored... Could it be a tiny hope of escape?