Why Crab-Like Bodies Evolved Repeatedly
PBS Eons · Explainer · 7 min · 2020 · YouTube title: Why Do Things Keep Evolving Into Crabs?
Why it's here
HN cites it as a clear, well-made treatment of convergent evolution and crabs.
What it covers
A short PBS Eons episode on carcinization, the repeated independent evolution of crab-like bodies in unrelated crustaceans, and what makes that form so successful.