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| 2 | Live birth performed by sharks |   
| 3 | The phylum for cartilaginous fish. |   
| 5 | Live egg birth performed by sharks |   
| 7 | A gas filled chamber which help keep many fish afloat (sharks lack this) |   
| 8 | Egg birth by sharks |   
| 9 | Bony flap protecting fishes gills (sharks lack this) |   
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| 1 | A system used to help cartilaginous fish fine their vibrations through vibrations in the water. |   
| 4 | A type of cartilaginous fish |   
| 6 | A type of cartilaginous fish |   
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