Back in my school days, February was an important month â not just because it included the eagerly-anticipated Valentineâs Day, but because even though it was the shortest month of the year, it encompassed two holidays for which public schools were closed: Lincolnâs Birthday (February 12) and Washingtonâs Birthday (February 22).
Oysters of tropical and semitropical seas are mature and ready to hand on life at the age of three years. Osyters of cool winter waters, as a rule, are mature at the age of four years. Edible oysters are pampered and tended by fishermen. The settled youngsters are called oyster spats until they become two inches long.
1 Estimates of sexual maturity in sea turtles vary not only among species, but also among different populations of the same species. Maturity may range from as early as three years in hawksbills to 12-30 years in loggerheads to 20-50 years in green sea turtles.  Sexual maturity often is related to carapace size. Studies have shown that hawksbills reach sexual maturity at a carapace size of 60 to 95 cm (24-37 in.); loggerheads reach maturity at a carapace size of 79 cm (31 in.); and green sea turtles reach maturity at 69 to 79 cm (27-31 in.).