Trachodonts are thought to have been expert swimmers.

Unlike other dinosaurs their remains are frequently found in rocks that were formed under sea water probably bordering the shores but nevertheless containing typical sea shells.
"The elaborate dental apparatus is such as to show clearly that Trachodonts were strictly herbivorous creatures.

The mouth was expanded to form a broad duck-like bill which during life was covered with a horny sheath, as in birds and turtles.

Each jaw is provided with from 45 to 60 vertical and from 10 to 14 horizontal rows of teeth, so that there were more than 2000 teeth altogether in both jaws.
"Among living saurians, or reptiles, the small South American iguana _Amblyrhynchus_ may be compared in some respects with the Trachodons notwithstanding the difference in size.

These modern saurians live in great numbers on the shores of the Galapagos Islands off the coast of Chile.