Blue is an unusual color but here you find some with that color
Unsure of this ID. See http://www.spongeguide.org/speciesinfo.php?species=24
could be Smenospongia instead?
Red Sieve Encrusting Sponge?
In Approx 10' of water
Found when scraping off a dock in Belmont Shore, Long Beach, California.
It reacts very sensitive and closes its oscula if it is approached closer them 50cm (with the Camera)
Sponges are animals of the phylum Porifera (/pɒˈrɪfərə/; meaning "pore bearer"). They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and which often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most...