YOU SAID:

going swimming off the deep end

INTO JAPANESE

深い端から泳ぎに行く

BACK INTO ENGLISH

Go swimming from the deep end

INTO JAPANESE

奥から泳ぎに行く

BACK INTO ENGLISH

Go swimming from the back

INTO JAPANESE

後ろから泳ぎに行く

BACK INTO ENGLISH

Go swimming from behind

INTO JAPANESE

後ろから泳ぎに行く

BACK INTO ENGLISH

Go swimming from behind