English: Four methods of snorkel attachment are illustrated.
Method A: The mask strap is threaded through the fixed loop moulded onto the snorkel barrel.
Method B: The mask strap is threaded through the adjustable and removable rubber loop on the snorkel barrel.
Method C: An attachment method discontinued after the 1950s, the rubber band knotted at one end to the snorkel barrel is stretched at the other end around the head.
Method D: The mask strap is threaded through the plastic snorkel keeper fitted to the snorkel barrel.
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