What do you think of my Orca Animation?

Hello guys I made an Orca Animation and I want some questions answered here, please.

What do you like?

How can I make this more realistic? Is this normal tail movement?

Install Animation and model here:
https://www.roblox.com/library/9391571868/Orca

View the Animation here

instead of us having to installing it ourselves, can u show us a video or something?

Sure i will put it in soon, right now im on a flight

Heres the Animation

The middle doesn’t move at all. I would recommend making the movement, then tail and head. It could make it look more realistic!