HI!
Well, it is tough for me to ID cukes in general...locality, shots of the feeding tentacles, etc are all basics, but many or most cuke identifications come from examination of microscopic ossicles in the body wall. I have some people I might be able to send pics to, but cukes in general are somewhat similar and tough to identify without more structure/information. I know that the two pics are not the same animal...but you can see how similar they look nonetheless.