This harbor seal, photographed at Robert Moses State Park on Long Island, New York, seems to be onto something—spreading good vibes, one wave at a time.
That's exactly the spirit of World Hello Day, celebrated every November 21.
This cheerful observance began in 1973 when two American brothers, Brian and Michael McCormack, launched it as a peaceful response to global tensions.
They mailed 1,360 letters in seven languages to world leaders, inviting them to join the first celebration.
Their message was simple yet powerful: personal communication can help preserve peace.
Today, people in more than 180 countries participate.
