Apparently there was a video which showed, through murky water, the silhouette of a Sea Rex, though I've yet to see it.

I saw it, at least I think I saw it
it was a realy bad quality streaming video... and it's of the internet for years now

the SeaRex was quite long and moved like, well like a Sea Creature

Just to add another point to the mammal arguement, don't you have to have MAMMaries(dormant or otherwise depending on gender) to be a MAMMal?

ive seen that bad quality with a searex (i think)
but that was just a half year ago when i searched on www.altavista.com an i typed oddworld movie in.

i will have a look again if i can find it

Shell Man, that makes sense - though it appears to me that Clakkerz may have mammary glands. At least the females are equipped with so-called 'mammaries'.