Florida saltwater fish and inverts

[nicks nano reef]

As a young reefer and nature enthusiast I will of then go to sea grass beds, salt marshes, and estuaries in a search for something new or interesting. but when I find some of these things I often find little to no information on the animal, and cant even identify many of the creatures I find. so this thread will be open to anybody who has found something that was hard to identify or is rare, or even if you just want to brag. I only ask that you provide a picture and don't put fake ID's
(p.s. contrary to the title it doesn't have to be only saltwater fish/inverts )

 

[nicks nano reef]

1 the apodid sea cucumber.

 

[nicks nano reef]

2 a sea squirt

 

[nicks nano reef]

3-big claw pistol shrimp. (picture was found on Google but its still the same as mine)

 

[nicks nano reef]

sargassum crab