White spikes growing on aquarium rock

[Doryandnemo]

Does anyone know what are this white spikes growing in my aquarium live rock?

 

[Autumnsky]

What are the fish and snails you have in the tank?

 

[Doryandnemo]

I do not have any fish at the moment., only a Mexican snail and a starfish.

 

[Autumnsky]

Turbo snails eggs look like a squiggle line of gelatinous dots.

A search indicates a possible deposit of Starfish eggs. I saw a couple pics which looked very much like your pic.

What type of starfish?

 

[coralbandit]

Is it soft ?
It could be a macro algae turning white .
Was it on the rock or did it just grow?

 

[Doryandnemo]

Turbo snails eggs look like a squiggle line of gelatinous dots.

A search indicates a possible deposit of Starfish eggs. I saw a couple pics which looked very much like your pic.

What type of starfish?

It is a sand sifting starfish.

 

[Doryandnemo]

Is it soft ?
It could be a macro algae turning white .
Was it on the rock or did it just grow?

I am afraid to touch it, therefore I do not know if they are soft. They look hard and stiff. They show no movement. It just grew on the rock from nowhere.

 

[coralbandit]

It looks like Neomeris sp. "spindle weed" bleached out . Do you know your Ca level ?
First picture in link ,but your is white.
https://www.google.com/url?sa=t&rct...sl/index.php&usg=AOvVaw3RjPy7AHyF93klyo6ji2hG