Invertebrate, any animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates. Apart from the absence of a vertebral column, invertebrates have little in common. More than 90 percent of all living animal species are invertebrates.

About 95 percent of all animals are invertebrates – animals without backbones. Invertebrate animals fly in the air, crawl in the soil, walk on the land, and inhabit oceans or freshwater lakes and streams. Some invertebrates have bodies that are so simple, they do not even have organs like hearts or lungs.

These animals, the sponges, spend their lives rooted in one place on the ocean floor. They depend on moving water to bring them food and give them the oxygen they need to live.

Other invertebrates, like butterflies, snails, and spiders, are more familiar to us and may even be some of our favorite animals.

. ^ Sprung, Julian (14 August 2002).

Advanced Aquarist. Pomacanthus Publications, LLC. Retrieved 14 December 2014. Retrieved 14 December 2014. Goemans, Bob. Retrieved 26 November 2014. ^ Sprung, Julian (14 October 2002).

Advanced Aquarist. Pomacanthus Publications, LLC. Retrieved 4 December 2014. ^ Borneman, Eric. Reefkeeping Magazine. Reef Central, LLC.

Archived from on 3 November 2014. Retrieved 13 December 2014. de Vries, Joost. Reef Builders.

Reef Builders, Inc. Retrieved 10 December 2014. I-5 Publishing, LLC.

Retrieved 13 December 2014. ^ Fatherree, James W.

(3 October 2012). Advanced Aquarist.

Pomacanthus Publications, LLC. Retrieved 4 December 2014. Fatherree, James W. (14 December 2011). Advanced Aquarist. Pomacanthus Publications, LLC.

Retrieved 4 December 2014. Hanley, Charles J. Quality Marine. Retrieved 13 December 2014. Thein, Than. Saltwater Smarts.

Saltwater Smarts. Retrieved 13 December 2014.

Dana Riddle. Advanced Aquarist.

VII (January 2008). Retrieved 13 December 2014. ^ Fatherree, James W. Retrieved 4 December 2014. Microcosm Aquarium Explorer. Microcosm, Ltd. Retrieved 23 November 2014.

Fish Lore.com. Retrieved 27 November 2014. Retrieved 28 November 2014. ^ Fatherree, James W. Reefs Magazine.

Archived from on 14 December 2014. Retrieved 14 December 2014. Alderton, David (2005). Encyclopedia of Aquarium and Pond Fish (Second ed.).

Superskills Hockey director Mario Martiniello, is excited to announce camps coming to The Ice Den in Hooksett, NH. Superskills will be running its most popular week long camps just in time for the start of the season. Both camps will be run out of the Ice Den Arena.' I am really excited to bring these to camps to the Ice Den. Superskills hockey. Superskills will combine energy and enthusiasm into and up tempo skill session geared at developing the complete hockey player. Superskills director Mario Martiniello and his staff will work hard to develop each players individual skill needs regardless of level. Summer Training Program. Superskills Hockey has designed an exciting program for the highly motivated hockey player. This 8 week summer program will surely get your son ready for the fall hockey season. More importantly, Mario will prepare your son/daughter better than anyone for his high school hockey experience.

DK Publishing, Inc. 286–297. Lougher, Tristan (2008) First Published 2007.

What Invertebrates?: A Buyer's Guide for Marine Aquariums. Books Series. Barron's Educational Series, Inc.