How to evolve biological radios?

Radio Thinkers

Creatures that communicate by biological radio pops up in science fiction occasionally and it's a fun idea. However, there are some practical concerns with regards to evolving a radio in a creature's head.

I'm looking for a discrete sequence of evolutionary pressures that would encourage a species to develop radio communication without any external tools or equipment. The radio must be embedded in their bodies in order to be considered. Why would they evolve radios in their heads and what evolutionary steps would get them there?

Evolutionary Environment

Let's use a cooperative hunter species on an Earth like planet for a start. The planet can have any features you'd like in terms of atmospheric or crust composition, as long as a normal Earth human can survive there without a space suit (ignoring any pathogenic concerns).

This is a science-based question so fanciful giant leaps or large amounts of handwaving are discouraged.

Note: There is this question about how a hive-mind might communicate. I believe this question is distinct in that it asks for an evolutionary process instead of just how it might work after evolving.

posted over 8 years ago

Green‭

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