Sharks tend to live between 20 and 30 years, but the number and diversity of shark species makes it difficult to give a definitive answer on sharks as a whole. Notably, Spiny Dogfish and Whale Sharks can live to be over 100 years old.
According to Sharksinfo.com, sharks do not care for their young after birth. Shark pups swim away and fend for themselves moments after they are born. Depending on the species of shark, liters range from three to as many as 100 healthy, well-developed shark pups. Scientists have rarely seen sharks mate, as sharks are elusive in their mating rituals. Some sharks hatch from eggs, while others are born alive. There have been cases in which female sharks in captivity have reproduced asexually, which is seen by scientists as a last resort option in the absence of males.