Animals That Can Change Sex: Nature's Flexibility
Clownfish can switch from male to female if needed, with the largest immature male becoming the new mate if the female dies
Gobies are small fish with the remarkable ability to change their gender based on environmental factors
Hawkfish can change genders. A male may revert to female if their harem loses females or if challenged by a larger male
Black sea bass, ranging from Maine to Florida, are protogynous hermaphrodites that switch from female to male
Banana slugs are simultaneous hermaphrodites that exchange sperm with a partner during mating
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