Canoe unsuitable for so much water (5)
I believe the answer is:
ocean
'so much water' is the definition.
'ocean' can be an answer for 'water' (oceans are bodies of water). I am unsure of the 'so much' bit.
'canoe unsuitable' is the wordplay.
'unsuitable' indicates an anagram (letters not in suitable order).
'canoe' anagrammed gives 'OCEAN'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for ocean that I've seen before include "Very large area of sea" , "eg Indian, Atlantic" , "A lot of water!" , "Indian, for example" , "Large body of salt water" .)