International Whale Shark Day

International Whale Shark Day is observed on August 30 to draw attention to these remarkable creatures and promote the preservation of their species. The whale shark is the largest shark in the world, reaching lengths of up to 60 feet. Known for their slow, graceful movements, whale sharks typically prefer shallow waters but can be found as deep as 3,000 feet. Sadly, this makes them easy targets for fishing, and their population has declined by at least 50%. As a result, whale sharks are now listed as endangered.

History

Whale Shark Day was first celebrated in 2008 at an international conference for the species held on Holbox Island, Mexico. The event brought together 40 ocean experts, activists, and scientists who were deeply concerned about the declining numbers of whale sharks.

Interesting Facts

Although whale sharks have existed for over 240–260 million years, the first recorded specimen was discovered off the coast of South Africa in the 1820s. Dr. Andrew Smith described this fish as the largest shark that ever lived. Despite their intimidating size, whale sharks are not aggressive. At birth, they measure only 16–24 inches but can live up to 25 years and grow as long as 46–60 feet. They have 300 rows of tiny teeth—about 3,000 in total, each only 0.2 inches long! Weighing around 12 tons, whale sharks feed mainly on plankton, squid, and fish, filtering huge volumes of water through their mouths.

How to Take Part

You can celebrate International Whale Shark Day in a meaningful way:

• Learn more about these fascinating marine giants.
• Avoid using plastic products at the beach—plastic bottles and bags can be deadly if ingested by whale sharks or other marine animals.
• Spread the word on social media about whale sharks and their endangered status. Share photos, raise awareness, and remind others not to leave plastic waste on beaches. Use the hashtag #InternationalWhaleSharkDay.
• Donate to ocean conservation organizations that work to protect whale sharks and their habitats.

When is International Whale Shark Day in 2025?

International Whale Shark Day is observed on August 30 each year.

Observations