1. true
2. false

The narwhal is a type of odontocete, or toothed whale.

1. white whale
   corpse whale
2. killer whale

Narwhals are commonly known as corpse whales because the creature's mottled appearance makes its resemble a bloated corpse.

1. 3 feet (91 centimeters)
   5 feet
2. 8 feet

The narwhal measures 5 feet at birth and grows to an average length of 13-20 feet (4-6 meters).

1. 1,200 pounds (500 kilograms)
   2,300 pounds
2. 3,500 pounds

A typical narwhal weights in at 3,500 pounds.

1. plankton
   algae
2. fish

Narwhals nosh on fish, shrimp and squid.

1. Australia
   arctic region
2. tropical areas

Narwhals live in the arctic regions around Russia, Greenland and North America. Unlike many other sea mammals, they prefer not to migrate.

1. six months
   nine months
2. 15 months

The female narwhal reaches sexual maturity at age 5 and has a gestation period of 15 months.

1. 30-40 years
   40-50 years
2. 50-60 years

A typical narwhal lives 30-40 years. The killer whale is the creature's only true predator, besides humans, of course.

1. true
2. false

Researchers have discovered that narwhals with tusks eat the same diet as those with no tusks, indicating that the tusk plays no real role in feeding.

1. They are both the same size.
   right
2. left

For some inexplicable reason, the narwhal's left tooth is significantly larger than the right.

1. 8.8 feet (2.7 meters)
   12 feet
2. 15.3 feet

The average male narwhal tusk measures 8.8 feet.

1. true
2. false

The narwhal is a social creature and often lives in a pod ranging from two to 10 members.

1. 3 percent
   10 percent
2. 50 percent

Just 3 percent of female narwhals have a long tusk or tooth like their male counterparts.

1. 25 percent
   35 percent
2. 50 percent

Narwhals have a body fat percentage around 50 percent, which helps to keep them warm in arctic conditions. Most other whales have body fat in the 20-30 percent range.

1. killer whale
   sperm whale
2. beluga whale

The beluga whale is the narwhal's closest relative.

1. true
2. false

There are an estimated 80,000 narwhals on Earth, which puts them at near-threatened status, but they are not endangered.

1. The animal dies.
   nothing
2. The tusk regenerates.

The amazing and unexplained narwhal tusk grows continuously and will regenerate when worn or broken.

1. fluke
   eyes
2. dorsal fin

The narwhal has no dorsal fin but does have a ridge on its back where this fin would typically be located on a whale.

1. muktuk
   mukrag
2. mushoo

Many Inuit people feed narwhal skin, or muktuk, to sled dogs, though some people also consume the skin.

1. true
2. false

The narwhal has a whopping 10 million nerve endings in its tooth, allowing it to experience tremendous sensation through this appendage.

1. true
2. false

While people have long disagreed on the purpose of the narwhal tusk, scientists have only recently discovered that the tusk can detect changes in water pressure, temperature, salinity and particle content.

1. true
2. false

A narwhal tusk can bend up to 1 foot (30 centimeters) in any direction without breaking.

1. 1,000 pounds
   10,000 pounds
2. 100,000 pounds

Narwhal tusks have long been prized for their magic or healing properties. Queen Elizabeth paid 10,000 pounds, the price of a castle, for a tusk back in the 16th century.

1. true
2. false

Narwhal tusks are often algae covered and have a spiral pattern — yes, like a unicorn.

1. true
2. false

The spirals on a narwhal tusk always run counterclockwise, even on the rare creatures born with two tusks instead of one.

1. none
   32
2. hundreds

Narwhal actually have no other teeth beyond their prominent tusks.

1. vitamin B
   vitamin C
2. vitamin D

Narwhal skin has as much vitamin C as an orange, pound-for-pound, and has served an important role in the survival of the Inuit people over the years.

1. true
2. false

Despite their intriguing appearance, you will rarely see a narwhal in an aquarium. In the past, the majority of these creatures have died after a few months in captivity.

1. black
   white
2. gray

Narwhals start off blue-gray and lighten as they age. Adults are a mottled gray, while elderly narwhals are almost entirely white.

1. true
2. false

Since 1972, it's been illegal to sell narwhal tusk in the U.S. Tusks brought into the country before that time go for around $1,700 per foot at auction.