Need Help ID Please. Thank you

[TVR]

Cross my finger these aren't bad things...
How to get rid if bad stuff they are... Thankss

1. The Shrimp I found just lately (fig. 16)
2. The green look like toothpick (fig. 21), start being found on one of the rock. Start seeing them more than 10 growing now.
3. The like brown thing (fig. 22) l found on another rock. growing in group or afew, not many yet.

Thanks in advance.