Return to the Sea
Fishermen in Japan have accidentally caught a bottlenose dolphin with rear fins. These are thought to be the remains of hind legs, indicating that dolphin ancestors walked. The fins of common dolphins still have finger bones like a human hand. Though land animals evolved from sea life, about 50 million years ago dolphins abandoned the land and returned to the sea. Maybe dolphins know something we don't.
From my own experience, there are many advantages to living underwater. It is much easier to regulate one's body temperature when submerged. Tropical storms are hardly a bother. Swimming every day keeps one in excellent shape, which is why you don't see dolphins with pot bellies. There is a place off the coast of Queensland where dolphins come so close to shore that a little girl can wade out and touch them.
The dolphins tell me that their bulbuous skulls are shaped that way to localise sound signals, like the sonar dome in the bow of a submarine. That is also the purpose of the oil reservoir in the Sperm whale's head. I have never seen this written in the literature. Should I write a paper?
If we are ever to find intelligent life in Space we should be able to recognise it on Earth. Dolphins are more intelligent than we are in some ways. Dolphins do not waste their lives on drugs, alcohol, or "dark energy." This is the view from a dolphin's world, which looks very inviting.