2 different weird white "eggs"

[teza_125]

just recentyl i noticed a strande white eggy kinda thing. im not sure how long its been there but i would say at least a few months. its kinda milky white with patterns hardly visable in a darker shade.
<a href="IMG_0321.jpg - Image - Photobucket - Video and Image Hosting" target="_blank"><img src="http://i90.photobucket.com/albums/k275/teza_125/IMG_0321.jpg" border="0" alt="Photobucket"></a>
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<a href="IMG_0327.jpg - Image - Photobucket - Video and Image Hosting" target="_blank"><img src="http://i90.photobucket.com/albums/k275/teza_125/IMG_0327.jpg" border="0" alt="Photobucket"></a>


another white egg showed up probably about 3 weeks ago, its much smaller and solid white.
<a href="IMG_0322.jpg - Image - Photobucket - Video and Image Hosting" target="_blank"><img src="http://i90.photobucket.com/albums/k275/teza_125/IMG_0322.jpg" border="0" alt="Photobucket"></a>
<a href="IMG_0328.jpg - Image - Photobucket - Video and Image Hosting" target="_blank"><img src="http://i90.photobucket.com/albums/k275/teza_125/IMG_0328.jpg" border="0" alt="Photobucket"></a>
<a href="IMG_0331.jpg - Image - Photobucket - Video and Image Hosting" target="_blank"><img src="http://i90.photobucket.com/albums/k275/teza_125/IMG_0331.jpg" border="0" alt="Photobucket"></a>

we have two small harmit crabs, one large blue starfish, 2 baby banded starfish, a large scary looking worm. also there is something less than a cm long that from the flashes i have seen looks like a black yabby hiding in the rocks (only seen a glimpse of its head as it pulled back inside) any ideas, how common are mantis shrimps. there had been tapping on the glass but it sould be the hermit crabs.
p.s. sorry about bad quality of photos.

 

[Ziggy953]

The first pic is a sponge nothing to worry about. Can't tell in the other pics they are too blury for me to make anything out.

 

[Innovator]

They look to be sponges, possibly of Clathrina.

 

[teza_125]

thanks, glad im not waiting for it to hatch anymore. the second one looks a bit like a red back egg. its tiny, half the size of a pea.
http://www.immigrate-to-a-new-life-in-perth.com/images/RedBack250-1.jpg

 

[roka64]

I agree, they look like sponges.