What is the smallest cetacean, Hector's dolphin or vaquita?

Posted by appledeers@reddit | marinebiology | View on Reddit | 6 comments

Hi! I figured I'd post here because I am curious. I saw a post on Instagram that referred to Hector's dolphins as the smallest dolphin species, but I had always assumed that title belonged to the vaquita. I did some googling and it seems like the answer to this question is different depending on what site you look at. Even the respective Wikipedia articles for the two species both simultaneously claim ro be the smallest. It seems like their size ranges overlap a lot which I'm guessing is the source of the conflicting claims, but does anyone know which species tends to be smaller on average? Thanks for any responses!!