Mollusks create mother of pearl to protect themselves. In addition to forming part of the shell, it also insulates mollusks from bacterial infection and parasites. Another function of this substance is to reduce irritation or damage from material such as sand or grit that drifts into the shell.
The Ring of Honor is an American professional wrestling event that showcases five main events annually, and a number of internet pay-per-view live events. Most of the events may be purchased and viewed in DVD.
In 2009, ROH signed a television deal with HDNet, which aired shows every week until 2011. As of September 2011, ROH's flagship broadcast Ring of Honor Wrestling has been syndicated by parent company Sinclair Broadcasting, and airs on Sinclair owned stations across the country.