I have a challenge for you.
I challenge you to investigate the evidence for the arteriodactyl to cetacean sequence. After you've done so, post a logical alternative to them being transitional. Don't forget to explain the shared diagnostic features, the movement and size change of features, the order of the strata in which the fossils were found, the change in environment that was evidenced in those same strata, the ability to utilize salt water as evidenced in their teeth, and the vestigial pelvis and legs in extant cetaceans.
This is a big challenge. Are you up to addressing it?
Nope.