Scientists believe that collosaeus was entirely (or almost entirely) aquatic and would have spent its life in the 1,800 square miles Trans-Sahara Seaway.
Collosaeus measured around 40 feet long, long enough to prey on large creatures. But, scientists aren’t sure whether the structure of its skull allowed it to consume creatures bigger than its own head, as many of today’s snakes do.
Collosaeus may be the largest sea snake ever, but is it the largest snake to ever live? Even with its tremendous length of up to 40 feet, collosaeus still doesn’t beat out the largest snake ever, titanoboa.