Whats in my fish tank?

[ssdarkside3]

Hello there, I have had this tank for 3 years and I have no clue what these plants are. Can someone please identify them? Are they dangerous? I did have polyps before but they died. Thanks!

Pic 1: (It's the clear polyp type thing in the middle and they're all over my Live Rock.)

Pic 2: (This is something I have never seen before and they're only on the bridge and sorry my Dog face puffer loves the camera)

(^ They're in the first square and kinda look like sticks)

Pic 3: (same as above)


(They're hanging on the triangle and square area)

[Zee]

Can't see the pictures. Maybe you could try uploading again?

[nickel]

Can repost pics so then can see and advise?