Tidelines creates personalized and graphed calendars with photos of the oceans' tidelines and shorelines. Customers can also upload 12 of their own pictures for their custom calendar. Tidelines offers 24 tide calendars, with photos available from the West and East coasts of the United States and the east coast of Australia. Tidelines also creates customized Tidebooks, four-by-five-inch tide calendars for your pocket or purse. Products can be ordered by phone or online. Volume-purchase discounts are available.