For These 7 Species, Sex Changes Everything

The video explores sexual dimorphism, where males and females of the same species differ in size, color, or shape. It discusses examples like elephant seals, where males are much larger due to sexual selection, and reverse dimorphism in species like moas. The role of color in mate selection is highlighted, with examples from birds. The video also covers sexual dimorphism in plants, such as orchids, and the impact of parental investment on brain size in fish. Extreme cases of dimorphism, like anglerfish and spoon worms, are also examined.

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