08/30/2026
🐋 Happy International Whale Shark Day!
The biggest fish in the sea may be a little more difficult to spot from Delaware’s shoreline, but that doesn’t make these incredible animals any less fascinating.
Today, we’re celebrating the whale shark, a gentle giant that can grow to more than 40 feet long and live for decades. Despite their enormous size, whale sharks are filter feeders, swimming through the ocean with their mouths wide open to collect plankton, tiny fish and other small organisms.
Whale sharks have a unique pattern of light spots and stripes across their bodies, and no two individuals have exactly the same pattern. Researchers can use these markings to identify individual sharks and track their movements across the ocean.
Unlike many other sharks, whale sharks pose little threat to people. They’re generally slow-moving and peaceful, spending much of their time cruising through warm tropical and subtropical waters in search of food.
While whale sharks aren't regular visitors to Delaware waters, their story is a reminder of just how connected our coastal waters are to the larger Atlantic Ocean. The health of our local marine ecosystems contributes to the health of an ocean shared by wildlife traveling across incredible distances.
📷: NOOA