A fish with knees. That's it.
Nobody asked for this. Biology did not approve it. The ocean moved on anyway. One fish. Two knees. Zero explanations.
Against millions of years of aquatic tradition, the fish simply stood up.
The joint was visible. The knee was real. Science remained silent.
Not gracefully. Not quickly. But enough to permanently change the sea.
First one fish. Then the pond. Then the ocean. The future is structurally questionable.