Lesson #550 - Hybrid Creatures

This is a fascinating finding by scientists, right? Here's my question about the scientist who made the discovery: if you've studied this animal for 20 years, as it claims in the article, then how did you only just determine it produced chlorophyll now? Twenty years, and you only just found this out?

You would think sometime in twenty years, they forgot to feed one of the sea slugs they kept in an aquarium, yet it survived anyway, and they would start asking, hey, how the hell did that happen?