Here are some further experiment drawings, I decided to create a character with human intelligence (hence I decided to keep the glasses from the previous experiment drawings) and gulp eel abilities. I did these drawings to explore how the character will move, and stand like. I especially like the last drawing, as it shows a nice movement and a profile view of the creature. Because the pelican eel has light producing organs along the whole body.
I found out from the further research that the eel has very small teeth which suggests that their diet does not consists of large fish.
Sort of reminds me of an idea of a whale, which is the largest mammal with a huge jaw and stomach, but only feeds on plankton.