Freeman Dyson rarely disappoints:
Every time a major impact occurs on Europa, a vast quantity of water is splashed from the ocean into the space around Jupiter. Some of the water evaporates, and some condenses into snow. Creatures living in the water far enough from the impact have a chance of being splashed intact into space and quickly freeze-dried. Therefore, an easy way to look for evidence of life in Europa’s ocean is to look for freeze-dried fish in the ring of space debris orbiting Jupiter. Sending a spacecraft to visit and survey Jupiter’s ring would be far less expensive than sending a submarine to visit and survey Europa’s ocean. Even if we did not find freeze-dried fish in Jupiter’s ring, we might find other surprises — freeze-dried seaweed, or a freeze-dried sea monster.
Freeze-dried fish orbiting Jupiter is a fanciful notion, but nature in the biological realm has a tendency to be fanciful. Nature is usually more imaginative than we are. Nobody in Europe ever imagined a bird of paradise or a duck-billed platypus before it was discovered by explorers. [E.A.]
From The Atlantic.