Carapace has a patterning reminiscent of sea shells.
The hat is seamless for the wearer’s comfort.

Instructions are given for a single colour but if preferred the shells could easily be knitted in a contrast yarn, the pattern tells you how.

Notions
4 mm (US 6) needles (circular or DPNs)
3 mm (US 2.5) needles (circular or DPNs)
Stitch marker
Darning needle for weaving in loose ends

Carapace (noun): A protective, shell like covering.