Animals · The deep sea

Goblin shark

Mitsukurina owstoni

Jaws that snap out of the mouth

A goblin shark near the seafloor, showing its long flattened snout and jaws tucked inside its mouth.
A goblin shark near the seafloor, showing its long flattened snout and jaws tucked inside its mouth.
  • Status: Safe
  • Ocean floors deeper than 650 feet, mostly off Japan

Numbers

Weight
350 lbmaximum recorded value
Length
11 ftmaximum reported 11 feet; in 2004 a 13 foot specimen was caught in Tasmania
Depth
4200 ftusually lives around 800 feet, this is the capture record
Liver weight
25 percent of bodyhelps with buoyancy in the absence of a swim bladder
Known specimens
45 specimensfigure reported by the source, likely outdated

Ten fun facts

  1. the name comes from the Japanese tenguzame, because tengu are mythical creatures depicted with very long red noses.

  2. it is the only living member of its family, as about two dozen related species are known only from fossils.

  3. its pink color is not from pigment, but from semi-transparent skin that reveals the blood vessels flowing underneath it.

  4. a muscle similar to a tongue sucks prey into the mouth immediately after the jaws snap forward into the water.

  5. the first specimen was caught in 1897 off Yokohama, and it was a male measuring forty-two inches long.

  6. in 2003, more than one hundred specimens were caught near Taiwan right after an earthquake in a new area.

  7. a live specimen caught in Tokyo Bay in January 2007 was displayed in an aquarium, but died two days later.

  8. in August 2008, a Japanese television crew managed to film a live individual, creating rare footage of the species.

  9. its tail resembles that of thresher sharks, featuring a very long upper lobe and no lower lobe at all.

  10. two previously undescribed species of tapeworms were discovered inside an Australian specimen, both completely new to science.

The quiz answers

The first one is the question printed in your book: here is the answer. The other four are extra.

Question 1 of 5★ this one is in your book

How does it spot prey in the dark abyss?

Question 2 of 5

Why is the goblin shark pink?

Question 3 of 5

What do its jaws do when it attacks?

Question 4 of 5

How much does the liver of this shark weigh?

Question 5 of 5

Where do most known specimens come from?

Try it yourself

Experiment 1

Measure eleven feet on the floor with a tape measure and mark the ends with two books. This is the maximum known length of this shark.

Experiment 2

Weigh your backpack, then calculate how many backpacks you need to reach three hundred fifty pounds. That is the maximum recorded weight for this species.

Experiment 3

Calculate one quarter of your body weight. In the goblin shark, that is the weight of the liver alone, which helps the animal float.

Data from Wikidata (Q499461) and Wikipedia (Goblin shark).