This set includes 6 simple puzzles each making one aquatic animal. Each of the 6 puzzles involves matching two pieces which when fitted together, form one aquatic animal. This exercise of matching the pieces improves the child’s visual discrimination ability. The large chunky pieces can be gripped & held by the child. This helps developing motor skills & eye-hand coordination. All the pictures from the puzzle pieces are thematic, so they impart more knowledge to the child about the marine creatures.