"Protecting the ocean is about ensuring the marine life thrives and supporting the people who depend on it every day," she said.
The environmental campaign follows the first wedding anniversary of Sanchez and Bezos on June 27, celebrating their marriage in Venice last year surrounded by their blended family of six children.
Reflecting on the family milestone, Sanchez noted the emotional significance of the ceremony, particularly the contributions made by their children.
"All of our kids gave speeches, mine and Jeff's, and they were all so meaningful," said Sanchez.
The couple shares a total of seven children from previous relationships.
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The Sun Valley conference in Idaho continues to host various global tech and media leaders for the remainder of the week.