SHARK ANATOMY
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| SHARK ANATOMY | |
| ATTRIBUTE | SHARKS |
BONY FISH |
| Skeleton | Cartilage only | Bones and cartilage |
| Swimming | Can only swim forward. | Can swim forwards and backwards |
| Buoyancy (floating) | Large oily liver | Gas-filled swim bladder |
| Gills | Gill slits but no gill cover | Covered gill slits |
| Reproduction | Eggs fertilized in female's body. | Eggs usually fertilized in the water. |
| Skin | Rough, sandpaper-like placoid scales | Slippery, overlapping scales |
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| SHARK ANATOMY | |
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