The actual length of it is almost 21inches if you measure from end to end. From the mouthpiece to the top if under water, it is about 16 and a1/2inches. Pretty standard to me. I have two other brands snorkels, dry and open ones, they are also about 17 inches. I love this snorkel the best among the three I have. The snorkel keeper is the best too. It makes changing snorkel between my other mask so easy. The whistle also acts as my redundant whistle just in case mind on my BC got lost or not working. Btw, of the three I have, ironically, this is the cheapest one. Almost three times cheaper. I highly recommend it for both scuba diving and snorkeling. No brainier.