When I was a marine biologist, I frequently interacted with sea creatures. I did so again for Halloween. (Is it weird to dress up in costume as something that you actually are? A surgeon wearing scrubs? An imperial stormtrooper trick-or-treating in his armor?)
Planetary Defense Command 
Lol – those are great 😀
I love your pics! I hope everyone had fun. 🙂
Well, our little dog didn’t like wearing the costume that much, but once we took it off her, she loved carrying it around in her mouth.