Impact, not depth, is the real divide between the birds and the mammals sharing these Pacific coves. A blue-footed booby can spear the surface at car-like speed because its body is built as a shock absorber, while a Galápagos sea lion treats water entry as a problem to soften, not to weaponize.Central to the booby’s trick is plumbing, not bravado. Its skull has reinforced bone and specialized subc...More