แหล่งที่มา

http://www.vcharkarn.com/vblog/36896

animal41.blogspot.com/

http://dit.dru.ac.th/biology/porifera.html

http://club.yenta4.com/view_topic.php?type=content&club=rean_rean&club_id=28131&table_id=1&cate_id=-1&post_id=252203

www.marinerthai.com/sara/view.php?No=1189

http://www.snr.ac.th/m4html/w4html/animalia.htm

http://learners.in.th/blog/wirut/132920

http://school.net.th/library/create-web/10000/science/10000-648.html

http://www.vcharkarn.com/vblog/40083

http://writer.dek-d.com/Writer/story/view.php?id=321993

http://picpost.mthai.com/view_picpost.php?cate_id=33&post_id=162758%20-%20295k%20-