No two leopard sharks have the same pattern of spots and stripes.
- No two leopard sharks have the same pattern of spots and stripes.
- Sevengill sharks have seven gill slits, while most other sharks have only five.
- Soupfin sharks have an unfortunate name, given that the practice of shark finning (slicing off the fins and dumping the sharks back in the water to die a slow death) mostly exists to provide fins for shark fin soup.
- Although the bat ray has a venomous spine at the base of its tail, it is not considered dangerous and uses the spine only when attacked or frightened.
- The big skate is (you guessed it!) the biggest of all skates. While rays have longer tails with spikes at the end, skates have shorter tails and no spikes (spines). Next to the skate is what's called a mermaid's purse: a capsule of fertilized skate eggs.
- The giant pacific octopus lives just 3 to 5 years, while sharks live between 20 and 30 years.
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