Can’t get a good answer on the current status of plesiosaur neck flexibility

[Reuben03]

Was hoping someone could help out, how much could they bend their necks and where? Obviously not up and down or out of the Water but how much could they move?

[BlueKrono]

From my understanding their necks were very inflexible, but some plesiosaurs had good flexibility at the joint where the head meets the neck. I recently read Richard Ellis's "Sea Dragons" and was struck by how rigid and immovable the necks supposedly were. Seemed almost a handicap, and makes me wonder about the electric shock hunting theory.

[Libraraptor]

This is a case for @dinotoyforum !

[DinoToyForum]

My summary: https://plesiosauria.com/biology/neck-function/

[Reuben03]

From my understanding their necks were very inflexible, but some plesiosaurs had good flexibility at the joint where the head meets the neck. I recently read Richard Ellis's "Sea Dragons" and was struck by how rigid and immovable the necks supposedly were. Seemed almost a handicap, and makes me wonder about the electric shock hunting theory.

I absolutely love that theory and want to see it explored further, thanks for the help btw!

[Reuben03]

My summary: https://plesiosauria.com/biology/neck-function/

Thank you!