What you’d expect is humans more or less on the level of animals — not greatly exceeding them in evil, or greatly transcending them in good.
Thinking about all the species of animals, birds, and fishes, it becomes apparent that each one requires a certain type of food, suitable for its anatomy.
The coagulation cascade cannot evolve unless there is simultaneously a mechanism in hand for controlling it. Both would have to arise at the same time.
Blood viscosity is the technical reason why Jack froze in less than 23 minutes, but icefish can survive for 15 years in water of a freezing temperature.
“The calyx appeared,” says Dr. Rob Raphael. A more magical explanation could hardly be fabricated.