Editing Hockey puck (section)

==In underwater hockey==
[[File:Glove-stick-puck.jpg|thumb|[[Underwater Hockey]] puck pushed by stick]]
[[Underwater hockey]] uses a type of puck that while similar in appearance to an ice hockey puck, differs in that it has a [[lead]] core weighing approximately {{convert|3|lb|kg}} within a [[teflon]], plastic or [[elastomer|rubber]] [[coating]]. This makes the puck [[dense]] enough to sink in a swimming pool, though it can be lofted during passes, while affording some protection to the pool tiles.

A smaller and lighter version of the standard puck exists for junior competition and is approximately 1&nbsp;[[pound (mass)|lb]] 12&nbsp;[[ounce|oz]] (0.80–0.85&nbsp;kg) and of similar construction to the standard puck.

While there are numerous regional variations in colour, construction and materials all must conform to international regulations stipulating overall dimensions and weight. The regulations state that pucks should be a bright distinctive colour, for example high-visibility pink or orange, and that for World Championships these are the only acceptable colours.