ID help?

[Xycron]

Hey everyone, sorry if these are obvious ones but I'm new to reefs

Few things I'm not sure what they are on my new live rock:

1) This red thing: (also the 2) little critter crawling on it?): https://imgur.com/a/ouKw9

3) Purple stuff, I have two rocks with this: https://i.imgur.com/tRJo64N.jpg

4) And a tiny urchin I think? Is this reef safe?: https://imgur.com/a/T37UJ

5) Any clue what kind of crab this is? https://imgur.com/OR8KnZm I put him in my sump in case he's not reef safe.

Thanks!

 

[bryanle87]

Sorry no help that’s kinda cool to discover new things.
I started everything new including dry rock and dry sand
and do a very strict dipping process. Hope everything is reef safe.

 

[joseserrano]

did this stuff come with your rock or something? 2nd is sponge for sure, 1st could be a starfish or a not too happy soft coral. crab is hard to tell, try tanking a pic of its shell. urchin looks fine.

 

[Xycron]

Yeah, I ordered live rock from Tampa Bay saltwater and it has all kinds of stuff growing on it, been trying to figure out what it all is.

Thanks for the help! I'll try to get a better picture of the crab.

 

[sklywag]

The first is difficult. You say it's crawling? Or is it just moving in current? Crawling maybe a slug of some sort looking at what could be a mouth towards the bottom. If so, good sand sifter and a keeper. If moving in current, it sort resembles a mushroom and might be. Urchin is cool and sponge is cool. Crabs are iffy.

The great thing about live rock is it comes with fun stuff to discover. People create rock piles off the cost of Florida to farm live rock. You may be a benefactor of this process. Not too often you find hitchhikers anymore and that use to be part of the fun. People today are into sterilization.

 

[Xycron]

Sorry I wasnt clear. The red thing itself is not crawling or moving at all. There is something tiny on the red thing st the bottom and that moves around. Not sure what the red thing is or the thing on it.

Yes the rock is from a place that farms in Florida, I thought it was pretty cool when I read about it and decided to try it out. It'd Ben a really cool experience

 

[sklywag]

Still looks like a mushroom to me. Or a type of sponge. Do a search on encrusting sponges. The other maybe a crab or starfish?