sharkskin

Sharkskin refers to the skin of sharks, which is covered by dermal denticles, small tooth-like scales also called placoid scales. Each denticle comprises a dentine base with an enamel-like crown and a central pulp chamber, anchored to the shark's dermis. The denticles form a dense, overlapping mosaic that creates a microscopic texture on the skin. This texture reduces hydrodynamic drag and flow turbulence as the animal swims, contributing to swimming efficiency. The surface also provides abrasion resistance and can influence microbial attachment on the epidermis.

Sharkskin fabric is a type of textile known for a smooth, low-luster surface and a subtle two-tone appearance produced by a tight twill weave. It is typically made from wool or wool blends, though synthetic versions exist. The fabric often has a crisp hand, good drape, and durability, making it suitable for suits, jackets, and skirts. Its name derives from the likeness of the fabric's sheen and texture to the skin of a shark. Sharkskin fabrics were especially popular in mid-20th-century menswear and continue to be used in various formal and semi-formal garments.