Do we? I've heard this specious argument before, and I have NEVER seen a definition of "Kind" in a creationist book or tract. "kind" seems to be a catch all word for whatever the creationist wants it to be.
Evolutional theory says animals don't necessarity reproduce their own kind but that they reproduce all kinds of freaks and the "fittest" survive. This has NEVER been observed; therefore, we have the Bible's teaching as observed fact and the theory of evolution as a fantasy that does not exist outside of an athiest's closed mind.
Its funny you mention that there are no transitionals around. The Water to land transition happened over 300 million years ago! All of the transitionals are gone! Long extinct because of better adapted species! There are some current analogues to the transitionals, like the mudskipper, and the lungfish, but for the most part, animals with fully developed legs are better off than animals with flippers, on land, anyway. In the ocean, animals with flexible fins are better off than those with inflexible ones.
Have you been watching the PBS special? For you to say that evolution has never been to occur suggests to me that you haven't. During the first night, and last nights chapter, they mentioned several examples of natural selection. Viruses, and hummingbirds are just two examples that I gleaned from the parts I have seen thus far. I would encourage you to not use the bible as a scientific tome of knowledge, it is not exactly accurate in that manner (after all, it says that pi=3,right?)
Idiot.
(What's a seal? What's a sea otter? What's a penguin? What's this whole class of animals called amphibians? Their larvae are fully aquatic but their adults are air-breathers.)