Blue Whale Trivia Questions

The tongue of a blue whale can weigh around 2.7 tons, roughly the same as an adult female African elephant (about 3 tons).

Blue whale calls reach 188 decibels, louder than a jet's 140 dB. These low-frequency sounds travel hundreds of miles underwater.

An adult blue whale consumes about 4 tons of krill daily, which equals roughly 40 million individual krill due to their tiny size.

While a blue whale's heart is massive (about 400 lbs), its arteries are only about 9 inches wide—too small for a human to swim through. This is a common exaggeration.

Blue whales typically dive for 10–30 minutes. The record for any whale is about 2 hours (Cuvier's beaked whale), not blue whales.

A blue whale calf drinks up to 100 gallons of milk daily and gains about 200–250 pounds (90–113 kg) per day during its first year.

Orcas (killer whales) have been observed attacking and killing blue whale calves. Adult blues are rarely targeted, but they aren't completely predator-free.

Blue whale calls are low-frequency, but humans can hear them—they're just very deep, often below our optimal range. Some frequencies are audible with proper equipment.