FASTFACT
Sharks and rays also share the same kind of skin: instead of scales, they have small tooth-like spikes called denticles. The spikes are so sharp that shark skin has long been used as sandpaper.
Sharks and rays also share the same kind of skin: instead of scales, they have small tooth-like spikes called denticles. The spikes are so sharp that shark skin has long been used as sandpaper.