Marine Animals

3. Bladder - A gas-filled organ in bony fish
9. - An animal that lacks a backbone or vertebral column
10. Symmetry - An organism’s body can be divided into roughly mirror-images
11. - A lack of symmetry or balance in the structure or form of an organism
15. - One of two principal body types occurring in members of the invertebrates
20. - An animal that generate and controls its internal heat so that its body core temperature
21. - An Internal skeleton or supporting framework in an animal

1. - A tough, flexible tissue that lines joints and gives structure to the nose,ears and other parts of the body
2. Eggs - A type of egg that appear in reptiles, birds, and some mammals
4. - An animal with a backbone
5. Vascular System - A hydraulic system used by echinoderms
6. - An organism that possesses both male and female reproductive organs
7. - An animal whose body temperature also called cold blooded animal
8. - The shedding of casting off of a outer layer or covering and the formation of its replacement
12. Glands - Specialized organs in female mammals that produce milk
13. - An organ that forms in the womb, also called the uterus during pregnancy
14. - A form of asexual reproduction
16. - A hard covering that supports and protects the bodies of some types of animals
17. - Anything associated with or occurring at the bottom of a body of water
18. Symmetry - A body plan where parts are arranged around a central axis
19. - A cylindrical/Sac-like body form found in Cnidarians