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5 Sharks are NOT fish
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Fish/Shark skin sandpaper

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It seems to be a well established-established fact that shark skinsharkskin was used as sandpaper. This includes the use of the skin of rays and dog sharks.

My question is:

  • A. how far back does this practice go?
  • B. were any other fish types outside of the shark family ever used for this?

It seems to be a well established fact that shark skin was used as sandpaper. This includes the use of the skin of rays and dog sharks.

My question is:

  • A. how far back does this practice go?
  • B. were any other fish types outside of the shark family ever used for this?

It seems to be a well-established fact that sharkskin was used as sandpaper. This includes the use of the skin of rays and dog sharks.

My question is:

  • A. how far back does this practice go?
  • B. were any other fish types outside of the shark family ever used for this?
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