In general, the crowns of dermal denticles have cusps pointing tailward, which is why a shark feels relatively smooth if stroked from head-to-tail but sandpapery coarse if stroked the other way.
Are you reading the same thing I’m reading? Literally every search result describes shark skin as dermal denticles, or sharp tooth-like scales aligned from front to back, “relatively smooth” in one direction, and sandpaper-like in the other.
Apparently other animals regularly injured brushing up against them.
moody@lemmings.world 6 hours ago
www.elasmo-research.org/education/…/scales.htm
Zorcron@piefed.zip 6 hours ago
It’s telling me that shark skin is “smooth from all directions and at all times”
moody@lemmings.world 5 hours ago
Are you reading the same thing I’m reading? Literally every search result describes shark skin as dermal denticles, or sharp tooth-like scales aligned from front to back, “relatively smooth” in one direction, and sandpaper-like in the other.
Apparently other animals regularly injured brushing up against them.
SparroHawc@lemmy.zip 4 hours ago
Well, I’m touching a shark right now. Rubbing it every which way. No direction is off limits. It’s smoother than the finest silks