Sea serpent week!

It's sea serpent week at the ever-entertaining, quirky and knowledge-enhancing Tetrapod Zoology!

Hook Island tadpole
Moore's Beach monster
Something no one seems to know anything about
Tecolutla monster
Where are all the dead sea monsters?

It would be fantastic if there were still plesiosaurs and pliosaurs swimming around in the oceans today. Given that mankind has fished out just about every tasty aquatic creature though, it's extremely unlikely, and getting more unlikely by the day...