Cucumber? Chiton? Please Help Id

[filbie70]

Please let me know your thoughts on this one.

 

[flsalty]

It doesn't look like a chiton, especially the side shot. It does look a little like a black sea cucumber. It could possibly be a slug. Are those antennae or are there tentacles going all the way around the top?

 

[filbie70]

They look like tentacles. More shots.

 

[filbie70]

Cucumber then?

 

[KJ]

Cucumber.