- http://www.infoplease.com/encyclopedia/science/porifera-anatomy.html
- http://www.carsten-thoms.net/sponges/ecology/1_frames.html
- http://www.enchantedlearning.com/subjects/invertebrates/sponge/
- http://www.infoplease.com/encyclopedia/science/porifera-class-hexactinellida-glass-sponges.html
- http://animaldiversity.ummz.umich.edu/accounts/Chalaronema_sibogae/classification/#Chalaronema_sibogae
- http://tolweb.org/Porifera/2464
- http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi
- http://eol.org/pages/3142/overview
- http://animaldiversity.ummz.umich.edu/accounts/Porifera/
- http://poriferaf.blogspot.com/
- http://poriferaf.blogspot.com/2007/02/habitat.html
- http://en.wikipedia.org/wiki/Phylum
- http://www.storyofsize.com/sponges/
- http://www.ucmp.berkeley.edu/porifera/poriferalh.html
- http://www.tau.ac.il/lifesci/departments/zoology/members/ilan/documents/aquaculture244.pdf
- http://wordinfo.info/units/view/2733/page:5/ip:1/il:Z
- http://en.wikipedia.org/wiki/Ecology
- http://www.thewildclassroom.com/biomes/intertidal.html
- http://tolweb.org/treehouses/?treehouse_id=3431
- http://www.bio.fsu.edu/wulff/Wulff%202006b.pdf
- http://link.springer.com/article/10.1007%2FBF00347624#page-1
- http://animals.pawnation.com/habitats-sea-sponges-2396.html
- http://www.advancedaquarist.com/2004/4/inverts
- http://onlinelibrary.wiley.com/doi/10.1002/jez.1401770310/abstract
- http://www.mbgnet.net/salt/coral/animals/sponges.htm
- http://mbe.oxfordjournals.org/content/early/2014/01/31/molbev.msu057.short?rss=1
- http://jenningsanimalwiki.wikispaces.com/Porifera
- https://www.ebiomedia.com/prod/BOsponges.html
- http://www.jstor.org/discover/10.2307/3806619?uid=3739832&uid=2&uid=4&uid=3739256&sid=21104320781803
- http://cronodon.com/BioTech/Sponges.html
- http://en.wikipedia.org/wiki/Choanoflagellate
- http://www.britannica.com/EBchecked/topic/560783/sponge/32629/Regeneration
- https://www.youtube.com/watch?v=N462jZFr13k
- https://sites.google.com/site/animalbiologyspring2010/porifera/life-cycle
- http://en.wikipedia.org/wiki/Flagellum
- http://en.wikipedia.org/wiki/Detritivore
- http://en.wikipedia.org/wiki/Chemical_synthesis
- http://en.wikipedia.org/wiki/Heterotroph