are very small; the Florida black bear has a highly arched forehead and a long and narrow braincase. Estimates for 2002 indicated the number of bears statewide to be between 2,000 and 3,200, indicating an increase from the previous census in 1998. The biggest cause of concern is roadkill, although the rates of mortality are equivalent to other areas in the country. Florida does not have seal colonies, but stray seals come ashore in Florida occasionally. The most prevalent of those have been the common seal and the hooded seal, although a bearded seal was seen in 2007. The Caribbean monk seal was native to the Caribbean Sea and the Gulf of Mexico. Once a popular prey for Bahamas fishermen, their numbers diminished greatly in the 1800s. The last sighting of the species in Florida was in 1922, and specimens have not been seen anywhere since 1952. Cetaceans Of the several whales seen close to Florida, the most frequent and notable visitor is the North Atlantic right whale. Named as such because they were the "right" whales to kill, their only known calving ground is located off the coasts of Georgia and Florida. Pregnant females migrate from feeding grounds located far north and deliver calves from mid-December to March. Humpback whales are also re-colonizing the area while gray whales, once cavorting off Florida for the same reasons as the right whales, were extirpated from the Atlantic in the 17th and 18th centuries. The most common dolphin in the state is the common bottlenose dolphin. Dolphins, like manatees, are vulnerable to red tide and have mass fatalities when one occurs. Dolphins were designated the Florida state saltwater mammal in 1975. Even-toed ungulates The only native even-toed ungulate is the white-tailed deer. It is the most economically important hunting mammal in all of North America, and is one of the major prey animals of the Florida panther. There were only about 20,000 deer in Florida during the late 1930s, and the species was almost extinct in South Florida due to a campaign to eliminate tick-borne diseases. Hunt restraining measures and purchases from other states were very successful bringing the population to more than 700,000 deer statewide. A smaller subspecies, the Key deer, lives only in the Keys and numbers around 800 animals. Sambar deer were introduced in 1908 as alternative game for hunters on Saint Vincent Island. The population is between 700