Sharks and Sting Rays We observed spiny dogfish, a small shark
species. The dogfish we
observed were babies and had no teeth. These sharks stuck their
heads above the water and bobbed up and down. This "Tail dance"
was caused by the sharks sensitivity to electro-magnetic fields
around them. Also interesting is the fact that the dogfish will
only do the "tail dance" in the lab; it won't bob up and down
in the ocean. These dogfish are being researched at the MRC because
they are as prone to tetinal damage from U.V. light as humans
are.
Sting rays are related to sharks. They have no bony skeleton,
instead they have a cartilage skeleton.
They take 12 hours to lay their egg sacs, which are quite unusual
looking. A sting ray at the MRC
was laying an egg sac during our visit.
Go to MRC Page 1 - Marine Resources Center
Go to MRC Page 2 - Tidepool organisms
Go to MRC Page 4 - Cuttlefish
Go to MRC Page 5 - Interesting fish
Return to Tidepools to Telecommunications @ 2000 - 4 Archive Home
Page.