This item is an 8-piece set of plastic, 3D effect, "cut and press" sea life biscuit or cookie moulds. These are typically made from food-grade polypropylene (PP) plastic and feature separate outer cutters and inner stamps to emboss detailed patterns onto the dough. 

Set Details
The set includes eight different marine animal shapes: 
Whale
Dolphin
Fish (looks like a tropical or clownfish)
Shark
Sea Turtle