The author develops a feeling of mystery and terror by describing the sea creatures in detail and also by stating how they hunt and escape predators.
Explanation:
From the given text, three sea creatures are described which are the:
Atlantic Hogfish
Gulper Eel
Vampire Squid.
Also, in the description of the Atlantic Hogfish, it is narrated that it eats its prey from the inside out, after creating a hole on the sides of the prey.