It's difficult to spot a currently-living transitional, because you can't also see its future progeny. While a transitional species is alive, it's just another species. You don't know it's transitional until a very long sequence of generations has elapsed. So they're only identifiable in the fossil record. But if you want some currently-living candidates, try the walrus, seal, otter, walking catfish, penguin, and ostrich. Just don't ask what they're transitioning to. I don't know. That's the whole problem with your question.
For starters, if macro evo happened, then it would still be happening in every stage, it is not. If it were still happening in any stage, show me any, "just one" living breathing transitional specimen......In a way, the question is like asking someone to predict which country is a transitional between dictatorship and democracy. Iraq is certainly on the road to democracy, but only time will tell if makes the transition or falls back.It's difficult to spot a currently-living transitional, because you can't also see its future progeny. While a transitional species is alive, it's just another species. You don't know it's transitional until a very long sequence of generations has elapsed. So they're only identifiable in the fossil record.
But this is very interesting:
But if you want some currently-living candidates, try the walrus, seal, otter, walking catfish, penguin, and ostrich. Just don't ask what they're transitioning to. I don't know. That's the whole problem with your question.I used to think that the answer was simple: Species are only transitional in hindsight, so it's an invalid question. But you're right: If there are any candidates to watch, they would be those species that have recently (in evolutionary time) adapted to a very different environment than their "parent" species. Especially the ones that seem like they haven't quite mastered the engineering problems inherent in thriving in their new environment.