sentences:  The Yup'ik Norton Sound/Hooper Bay kayaks consisted of 5-6 young seal skins stretched for the covering.The Yup'ik style of seams contains a running stitch partially piercing the skin on top and an overlapping stitch on the inside with a grass insert.Caninermiut style Yup'ik kayak used in the Kwigillingok and Kipnuk regions and there are teeth marks in the wood of the circular hatch opening, made by the builders as they bent and curved the driftwood into shape.