January 20, 202000:17:29

Episode 155: Extreme Sexual Dimorphism

Many animals have differences between males and females, but some species have EXTREME differences! The elephant seal male and female are very different sizes: The huia female (bottom) had a beak very different from the male (top): The eclectus parrot male (left) looks totally different from the female (right): The triplewart seadevil, an anglerfish. On the drawing, you can see the male labeled in very small letters: The female argonaut, also called the paper nautilus, makes a delicate see-through shell: The male argonaut has no shell and is much smaller than the female (photo by Ryo Minemizu): Lamprologus callipterus males are much larger than females: The female green spoonworm. Male not pictured because he's only a few millimeters long: Show transcript:  

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