Travel by Ferry from Guangzou to Hong Kong Airport?

There is no ferry in service from Guangzhou Airpor to Hong Kong Airport. It is suggested that you go to downtown Guangzhou, and then take a direct cross-boundary coach to HKIA. The bus info could be searched on the official website of Hong Kong Airport.

Thank you
I am now tryging to buy a ticket from Guangzhou East to HK Kowloon online but so far after searching the KCR website I was transfered to the MTR website as both companies are now one and by the time I was about to order the tickets it tells me that all tickets must be collected from Hong Kong. As we will be in Guangzhou this is not possible.
How can I purchase a train ticket from Germany?
Thank you
Sheila

The official website currently only supplies train tickets from Hong Kong to Guangzhou online. You should ask for help from an agent. You may cotact with this website.