Kate Walsh, 57, stuns in a new underwater photo wearing a bikini & snorkel gear while promoting ocean conservation.

Think you know everything there is to know about Grey's Anatomy? Try our trivia & see what you remember from the past 19 ...

In the underwater snap to Instagram on Saturday, Walsh, 57, was photographed while diving in snorkel gear as she posed next ...

The original cast of Grey’s Anatomy. It’s been 20 years since Grey’s Anatomy first aired. Instantly hooking fans with the ...