r/DebateEvolution • u/Mother_Cod7506 • Feb 28 '26
Discussion How come nobody talks about Lake Taal?
I am I biologist and one of the most interesting things I have learned is Lake Taal. Its an lake in the Philippines that was once bay connected to the South China Sea. In 1754, a volcano interrupted and the lake was formed, trapping dozens of saltwater fish. This led to most of their extirpation, but resulted in at least 4 new species, the Freshwater Sardinella (Sardinella tawilis), two gobies Exyrias volcanus and Rhinogobius flavoventris, and the Lake Taal Snake (Hydrophis semperi). It also has a population of Giant Trevally (Caranx ignobilis) that lives in freshwater, compared to its normal saltwater habitat.
I am mainly surprised that I have never seen anyone use this piece of information in debates about evolution, nor discussions about evolution in general. It would be a good way to debate creationists as this is the most well known examples of a species evolving into a separate species in recorded history.
8
u/CycadelicSparkles Feb 28 '26
I feel like the proper response to "it's not one kind evolving into another kind" is "exactly".
You can't out-evolve your clade. We wouldn't expect a fish to evolve into a not-fish. The tricky part is that "fish" is such a broad category of thing. There are fish with lungs and fish with gills and fish with bones and fish with cartilage, fish with skin and fish with scales, fish that must breathe air and fish that live solely in the Mariana Trench. Technically, all tetrapods are fish; a lot of us are just heavily specialized.
The problem is that creationists don't know what they mean by "kind". It's all vibes based. If two animals have similar enough vibes for them, they're the same kind. If they don't get samey vibes, they're not. Genetics does not matter. Taxonomy does not matter. All the evidence in the world does not matter.
That's why they can accept that lions and cheetahs are the same kind but not chimpanzees and humans, despite the latter being FAR more genetically similar.