Of COURSE they are!!
(If you're moving toward living in water.)
Remember, whales don't gots legs! (Not very big ones anyway...)
That is a LOSS of genetic information, not a gain. When you seee fins growing, let me know.
And when demented writes his paper showing addition chromosomes added that human genitics that result in improvement, not wierd looking freaks of nature, let me know.
Otherwize, this is the same old circular argument by the same people who can't be bothered to update their old, washed up information with what is being discovered by modern research.