I plan a trip to Macau - from Sydney to Shenzhen Airport and then from Shenzhen Airport to Macau(directly)

It is appreciated to settle below queries:
1- Do we need tourist visa to China from Shenzhen Airport to Macau?
I did have a search on web site there is shuttle bus between Shenzhen Airport to Air port pier then to Macau -but still not sure whether need visa to China or not .
2- The last Shenzhen Airport ferry to Macau was 17:00 daily, is any other means of transport to Macau after 17:00. If it has, how can we get information for trip scheduling

Kindly advise

Regards

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