25. Pelican Eel
It may be weird, but there are some creatures in the sea that you may rightfully have questions about. Those might be, how the heck is this a thing or what act of Satan gave us this thing? The Pelican Eel likely will fall into this, as it is just the weirdest-looking thing you may see in this entire list.
As mentioned, it is obviously an eel. But it has a head that looks almost like an oyster or clam of some kind. The reason for the “pelican” name is likely due to how the pelican looks in the mouth. However, we’re still partial to calling it an oyster-faced eel, so the naming committee can get over it!