7 Species With Big Sex Issues

The video explores sexual dimorphism, where males and females of the same species exhibit different traits. It discusses size differences in species like elephant seals and cichlids, where males are larger due to sexual selection. It also covers reverse dimorphism, where females are larger, as seen in moas. Visual traits in mate selection are examined, highlighting how bright colors in birds and orchids attract mates. The video links parental investment to brain size in sticklebacks and describes extreme dimorphism in anglerfish and spoonworms.

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