Leatherback turtles are huge! They look like big, black, barnacle-encrusted sea zeppelins, or something. See them in this trailer for Jurassic Journey. The production quality is good, and it sounds exciting. Why am I not watching this on Discovery Channel? The Great Turtle Race features these creatures. Sea more turtle video at NatGeo, even . . . → Read More: Jurassic Journey, the Preview