Tidelines
Founded in 1981, Tidelines® made an immediate splash with its line of glossy calendars featuring brilliant photographs of ocean scenes. But what made the calendars unique was the collection of wavy lines, called sine waves, that charted the rise and fall of the tides in a given area. The sine waves offered a graphic, easy-to-read alternative to standard tide charts that rely solely on headache-inducing numbers. Today, Tidelines calendars and pocket Tidebooks are standard issue throughout the coastal United States, Australia and Mexico with ocean enthusiasts and others that simply enjoy the high quality photographs.