PIECE COUNT: 100 glossy pieces that fit and snap together with ease. PUZZLE SIZE is 27 x 18 inches when finished. This floor sized puzzle is rectangular in format. Perfect for ages 5 years and up and a great family activity! SUSTAINABLY SOURCED: 90% recycled materials, printed with vegetable-based inks. Some of nature's most fascinating creatures create their own light. Depicting both flying and crawling insects, fish, jellyfish, and pyrosomes, this 100-piece puzzle is an awe-inspiring introduction to the phenomenon of bioluminescence. When it is finished, turn out the lights, because this puzzle glows in the dark too! No sun can pierce the deep sea night, So creatures make their own pale light. Bioluminescence is the word for what they do. This puzzle, in the darkness, will also glow for you!