Vocabulary

5. of Lorenzini. Specialized electroreceptor organs in the heads of sharks, used to detect electric fields.
8. Fin. The tail fin of a shark or ray, used for propulsion.
11. Scales. The small, tooth-like scales that cover the skin of sharks and rays.
12. The family of carpet sharks, including the wobbegongs.
13. A subclass of Chondrichthyes that includes sharks, skates, and rays.
14. Line. A sensory system of canals and receptors that runs along the sides of a fish's body, detecting changes in water pressure.
15. family of requiem sharks, which includes species like the bull shark and tiger shark.
16. An opening behind the eye of some sharks and rays that helps with breathing while at rest.
17. The class of cartilaginous fish that includes sharks, rays, and skates.
18. Fins. The pair of fins on each side of a shark or ray, used for steering and balance.
20. Reproduction in which eggs are laid outside the body and develop independently.

1. A combination of oviparous and viviparous reproduction, where eggs hatch inside the mother's body.
2. Reproduction in which embryos develop inside the mother's body and are nourished by the mother.
3. A type of cartilaginous fish also known as "ghost sharks" or "ratfish".
4. Tail. A tail fin in which the upper lobe is larger than the lower lobe, characteristic of sharks.
6. A compound found in the liver of sharks, used for buoyancy.
7. The family of rays, also known as eagle rays.
9. The superorder of cartilaginous fish that includes all sharks.
10. Fin. The fin on the back of a shark or ray, which helps with stability.
19. Referring to the type of skeleton these fish have, made of cartilage rather than bone.