Seaview 180° V1 Snorkel Tube Jenna November 13, 2018 20:35 Updated Follow Lost your Seaview 180° Snorkel Tube? Don't worry, you don't need to replace the whole mask. We have snorkel tubes available à la carte here. Related articles Replacement Terralite Feet What size fins should I get? How do I decide which size mask to order? Comments 0 comments Article is closed for comments.