Photo by Sebastian Pena Lambarri on Unsplash

Whale Shark

Rhincodon typus
The whale shark is the largest fish in the ocean, reaching lengths over 12 m. Despite its size, it is a gentle filter-feeder with a wide mouth, spotted body, and checkerboard pattern unique to each individual.
They feed by filter-feeding on plankton, krill, and small fish, often near the surface. Whale sharks are slow-moving and spend much of their time cruising tropical waters, sometimes diving to 1,900 m.

Where divers may encounter it
Hotspots include Mexico (Yucatán), Maldives, Philippines, Galápagos, and Ningaloo Reef.

Diving tips
Swim calmly beside them without blocking their path. Keep at least 3 m distance from the head and 4 m from the tail. Never touch, ride, or chase them.

The IUCN lists whale sharks as Endangered, with population declines from vessel strikes, bycatch, and targeted fishing in some areas.

Did you know?

Every whale shark has a unique spot pattern, like a fingerprint, which scientists use to identify individuals.

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