Body length4.5 m
83.3Credit card widths
3Blue whale hearts
84.9 billionBohr radii
Excluding tusk; adult male
Photo from Wikimedia Commons
Narwhal
The unicorn of the sea/Marine Life
The narwhal (Monodon monoceros) sports a spiraling tusk that can reach nearly 3 meters long - it's actually an elongated left canine tooth that grows straight through its upper lip. Medieval Europeans believed narwhal tusks were unicorn horns and valued them at several times their weight in gold. The tusk is packed with up to 10 million nerve endings, making it an incredibly sensitive sensory organ.
Measurements
Body mass1,600 kg
32,000Rubber ducks
5.3 octillionGlucose molecule weights
Adult male
Tusk length2.7 m
1.48Step ladder heights
19.3Sunglasses widths
3.6Human strides
Longest recorded; average ~1.5-2.5 m
Dive depth1,500 m
100 quadrillionUranium nuclei
1.5 trillionCaffeine molecules
1,500Minecraft blocks
Among the deepest diving marine mammals
Swim speed1.7 m/s
1.5 tenthsCity buses
6.3 hundredthsThrown footballs
~6 km/h typical
Blubber thickness1 tenths m
333 quintillionthsOort Cloud edges
439 quadrillionthsMars orbit radii
5.58Dime diameters
~10 cm of insulating blubber
Dive duration1,500 s
8.3 tenths"Be right back"s
6.25TV commercial breaks
1.7 hundredthsMayfly lifespans
Can hold breath for ~25 minutes