Its name comes from the six pairs of frilly gill slits that line its throat, giving it a distinctive, prehistoric look. Unlike most sharks, the frilled shark has no separate dorsal fin near its tail.

To help with the lab, there are a number of photos and diagrams on the bench. Start your dissection with the heart. Make a medial incision on the ventral surface of the head between the gill slits.

If the shark is actually coming at you and it looks ... Finally, in fact, if a sharks got you in its jaws, the eyes and the gill slits — the five openings behind the eyes — are very sensitive.

The difference between a shark and other fish ... And they have five, six, or seven gill slits per side, not one per side as in bony fish. Some sharks lay egg cases with developing embryos ...

Great whites get all the glory, but bottom-dwelling sharks bring plenty to the table. Here, we're looking at some of our favorite seabed shark species.

What features do the coelacanth and the bull shark have in common ... from the water as it passes over the gills. Other fishes have gill slits. Tails: Fish tails also take many shapes.