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Spiny dogfish skin, SEM

K007/3987

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Credit

EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY

Caption

Spiny dogfish skin. Animated coloured scanning electron micrograph (SEM) of scales from the skin of the spiny dogfish (Squalus acanthias). These sharply pointed placoid scales are also known as dermal teeth or denticles. They give the fish's skin the feel of sandpaper. The tip of each scale is made of dentine overlayed with dental enamel. The lower part of each scale, which anchors it into the skin, is made of bone. The scales disrupt turbulence over the skin, considerably reducing the drag on the fish as it swims. This design has been investigated by engineers for use on the surfaces of aircraft and boats.

Release details

Model release not required. Property release not required.

Clip Properties:

  • Duration: 00:00:15
  • Audio: No
  • Original Frame Size: 4000x4000
  • Interlaced: No
  • Capture Format: Digital Rostrum
  • Codec: JPEG

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