The answer for the clue:
Narrow topographic depressions on the sea floor Answers
is:
T
R
E
N
C
H
E
S
About CodyCross
CodyCross is a famous newly released game which is developed by Fanatee. It has many crosswords divided into different worlds and groups. Each world has more than 20 groups with 5 puzzles each. Some of the worlds are: Planet Earth, Under The Sea, Inventions, Seasons, Circus, Transports and Culinary Arts.
