hi, i will be staying in noah's ark hotel (hk) & would like to go to Shenzhen for a day tour.

Can i take ferry at skypier and go to SZ by shekou port? once exit shekou port, i need to bring passport at exit to SZ? when i check skypier website, it says the ferry only transport passengers from hk airport to SZ airport... what does it means? pls. advise. thanks