Clownfish can switch from male to female if needed, with the largest immature male becoming the new mate if the female dies
Black sea bass, ranging from Maine to Florida, are protogynous hermaphrodites that switch from female to male, often triggered by a drop in the male population
Humphead wrasses change from female to male and from reddish orange to blue-green around age 9 but are endangered by overfishing and habitat loss
Banana slugs, up to 10 inches long, are simultaneous hermaphrodites that exchange sperm with a partner during mating
Clownfish can switch from male to female if needed, with the largest immature male becoming the new mate if the female dies