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Q&A What adaptations would an aquatic humanoid species need to develop sonar?

So, I have an aquatic humanoid species that I want to be able to use echolocation. They are extremely similar to humans,with some minor differences, like gills. (The reason I include this tidbit is...

1 answer  ·  posted 8y ago by Xandar The Zenon‭  ·  last activity 8y ago by Xandar The Zenon‭

Question biology water creature-design underwater xenobiology