Question 1

True or false: Sperm whales have the largest brain of any animal on Earth.

Accepted Answer

True. An adult sperm whale's brain weighs about 17-20 pounds, making it the heaviest known brain in the animal kingdom.

Question 2

True or false: Sperm whales can hold their breath for up to three hours while diving.

Accepted Answer

True. They typically dive for 45-90 minutes, but the record is around 138 minutes, though not quite three hours.

Question 3

True or false: Sperm whales produce spermaceti, a waxy oil once mistaken for whale semen.

Accepted Answer

False. Spermaceti is actually a waxy substance in their head used for buoyancy and echolocation, not reproductive fluid.

Question 4

True or false: Sperm whales are completely silent except for their famous echolocation clicks.

Accepted Answer

False. They also produce 'codas'—patterned clicks for social communication, and sometimes make trumpeting sounds.

Question 5

True or false: A sperm whale's stomach contains up to 500 pounds of squid beaks at once.

Accepted Answer

False. While they eat squid and accumulate some beaks, 500 pounds is exaggerated; they regularly regurgitate indigestible parts.

Question 6

True or false: Sperm whales sleep by floating vertically near the surface, like giant logs.

Accepted Answer

True. They take short naps while drifting upright in a behavior called 'drift diving,' often mistaken for dead whales.

Question 7

True or false: Sperm whale milk is so thick that it has the consistency of toothpaste.

Accepted Answer

True. With over 50% fat content, their milk is incredibly rich to support rapid calf growth in cold waters.

Question 8

True or false: Sperm whales are the only whale species that can dive deeper than 1,000 meters.

Accepted Answer

False. Several beaked whales and elephant seals also dive deeper; Cuvier's beaked whale holds the deepest record.

Sperm Whale Trivia Questions