A massive basking shark with its mouth wide open filtering plankton beside gill raker structures and a breaching silhouette on a light gray background.

Second-Largest Fish Alive, Smallest Brain for Its Size — Know Basking Sharks?

Difficulty

Hard

Questions

25

Volts

3/q

It opens its mouth a meter wide, filters thousands of tons of water per hour, and can leap clear out of the ocean. The basking shark is the world's second-largest fish with the smallest brain-to-body ratio of any shark. This quiz goes deep.

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