Woaah an alien! Oh, wait it's not real. 🙂
We will take this little dolphin to the next cache.
We had to look up the word from the description "congener" in a dictionary. It means "from the same species". Maybe it will be more clear to change the text on the TB-page to that... we think more people will understand it then. Or you could say: whales and dolphins, because it comes down to that, we think. Anyway, it's not that important 🙂. Have fun!