There’s parking for the car, but it’s swimming in water! (4)
I believe the answer is:
carp
'it's swimming in water' is the definition.
I can't judge whether this defines the answer.
'there's parking for the car' is the wordplay.
'there's parking' becomes 'p' (I am not sure about this - if you are sure you should believe this answer much more).
'for' means one lot of letters go next to another (I've seen this in other clues).
'p' after 'car' is 'CARP'.
'but' acts as a link.
Can you help me to learn more?
(Other definitions for carp that I've seen before include "Fish; find fault continually" , "Fish - complain" , "Criticise - fish" , "praise? The opposite" , "Raise trivial objections" .)