Various birds looking for fish (6)
I believe the answer is:
divers
This could be a double definition.
'various' is the first definition.
(I've seen this before)
'birds looking for fish' is the second definition.
'divers' can be an answer for 'birds' (I've seen this before). I'm not sure about the 'looking for fish' bit.
Can you help me to learn more?
(Other definitions for divers that I've seen before include "people taking the plunge" , "Some water-birds; assorted" , "Many and different" , "footballers going to the ground, needlessly" , "competitors at the Olympic Games?" .)