Of the deep seas (7)
I believe the answer is:
oceanic
(Other definitions for oceanic that I've seen before include "Like the main" , "Relating to large areas of water" , "In deep water" , "Pertaining to the sea" , "description of rollers" .)
I believe the answer is:
oceanic
(Other definitions for oceanic that I've seen before include "Like the main" , "Relating to large areas of water" , "In deep water" , "Pertaining to the sea" , "description of rollers" .)