Afluid environment suggests that the environment is

Hewo,

Here is your answer (if not to late):

The author describes the monsters and other sea animals with details and uses sentences like: "One thing we know for certain, much like the outrageous monsters we conjure in out worst nightmares, the deep ocean is an equally imaginative source of shock, awe, and outright fright." The author also uses the words: "nightmare(s)", "frightful", "horrific", "hideous", "creepy", "frightening" etc

Hope this helped! Good luck ^w^