Many swimmers love to lash out wildly! (5)
I believe the answer is:
shoal
'many' is the definition.
(thesaurus)
'swimmers love to lash out wildly' is the wordplay.
I cannot really understand how this works, but
'love' could be 'o' (love means zero in tennis) and 'o' is present in the answer.
an anagram of 'lash' is 'shal' which is located in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for shoal that I've seen before include "Lots of fish" , "Mob" , "shallow water" , "Large group of fish - sandbank" , "School of fish" .)