The most common and most likely answer to this crossword clue is the 6 letter word PLAICE
I've seen this crossword clue in The Times
P
L
A
I
C
E
More clues leading to the result PLAICE
- Sound location for fish
- Swimmer in location without current
- Swimmer standing around rear part of Jacuzzi
- Swimmer one put outside
- Spot, say, for fish
- Swimmer takes position restricting current
- Swimmer up mountain getting chill
- Fish put on the radio?
- Sound house for swimmer
- Vacancy filled by international swimmer
Buddy explains!

The straight part
We know that "Swimmer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case swimmer = plaice.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PLAICE mean?
PLAICE noun- Several similar marine flatfish of the righteye flounder family Pleuronectidae: