Jensen Beach, Florida off in order to protect the nests of the sea turtles. The three species found on this beach are the loggerhead, leatherback turtle and green sea turtle. Loggerhead nests are the most common type found on this and adjacent beaches. Locations of the sea turtles' nests are marked with the approximate date in which the eggs were laid and the expected date in which the eggs will hatch. These notifications are meant to discourage tourists and residents from visiting the beach in the evening hours during these time periods. Efforts are made to protect both species of sea turtles since
Varieties of Chinese increase, although there are also some sharp boundaries. However, the rate of change in mutual intelligibility varies immensely depending on region. For example, the varieties of Mandarin spoken in all three northeastern Chinese provinces are mutually intelligible, but in the province of Fujian, where Min varieties predominate, the speech of neighbouring counties or even villages may be mutually unintelligible. Classifications of Chinese varieties in the late 19th century and early 20th century were based on impressionistic criteria. They often followed river systems, which were historically the main routes of migration and communication in southern China. The first scientific classifications, based