Guys at coastal areas the clutch cable gets damaged easily due to the salty moisture.
There is a 100% chance on damage if driven through sea,if you can recollect such a drive then replace the cable straight away.
Easy way to check the clutch is by holding the car on clutch with an engaged 1st gear on an inclined slop with minimum acceleration.
If the car shivers and clutch slips on such condition the clutch plate/pressure plate is damaged and needs a replacement.
If not replace the clutch cable.
Please note that all car clutch's are not driven by cables,some are on hydrolic cylinder's.
Here on estilo it is the cable.