Goblin shark powerpoint

My Report of the Elusive
Goblinon
Shark
My Report
the Elusive
GOBLIN SHARK
By Susan Van Komen
By Susan Van Komen
Scientific name Mitsukurina owstoni
Order - Lamniformes
Family - Mitsukurinidae
Genus - Mitsukurina
Species - owstoni
FUN FACT:
The Goblin Shark is the only member of the
Mitsukurinidae family that originated at least 125
million years ago. Because of this, goblin sharks are
often referred to as living fossils.
Background Info
• “Goblin Shark” is a translation of its old
Japanese name tenguzame
• a tengu is a Japanese mythical creature
with a long nose and red face.
• First scientifically described by the American
ichthyologist David Starr Jordan in an 1898 issue
of Proceedings of the California Academy of
Sciences.
INTERESTING EVENT
Even though they are very rarely caught
during trawling, after an earthquake off
northwestern Taiwan back in April 2003 a
significant amount of goblin sharks were
caught.
Physical Description
• Can be blue, to grey to pink (sometimes a
bubblegum pink even)
• The pink color is not derived from skin
pigmentation- instead, it is from their
oxygenated blood capillaries because their top
dermis is slightly transparent.
GRAY BLUE
PINK HUES
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Has a soft body.
Flat elongated snout .
Protrusable jaws.
Long tail fin with no ventral lobe.
Fang-like inverted teeth.
Size can range anywhere between 8 to 17 feet long.
• Females are larger than males.
Ecosystem
• Patchy distribution in the Atlantic, western Indian
and Pacific Oceans.
• They are bottom-dwelling sharks rarely seen at the
surface or in shallow water.
• Found along continental shelves [~885 – 3149 ft] on
upper slopes, and off seamounts.
• Most shallow depth found at 311 feet.
• Juveniles are found in the more shallow waters
while mature adults tend to live in deeper
waters.
Feeding Behavior
• The goblin shark uses its ampullae of Lorenzini, pores found in its
snout, for electrodetection of prey.
• The jaws are modified for rapid projection that dislocates itself to
catch prey.
• The jaw is thrust forward by a double set of ligaments at the
mandibular joints. When the jaws are retracted the ligaments
are stretched and they become relaxed when the jaw is
projected forward. The jaws are usually held tightly while
swimming and function like a catapult.
• Believed to eat shrimps,
pelagic octopus, fish, and
squid
1
2
3
4
The Goblin Shark does this same
process but in reverse when it wants
to put its mouth back into place
It’s just as fun to watch
INTERESTING THEORY
Researchers think this shark floats motionless in
the water while waiting for food.
The soft flabby body allows it to float without
sinking or rising to the surface without any
movement at all unlike most sharks who sink if
they stop swimming.
Behavior
• Body form suggests that it is not a
good swimmer.
• Weak muscles, small eyes, just sits
and waits for food to bump into it.
Reproduction
• Ovoviviparous however, a pregnant female has
never been captured/witnessed.
• Mature females have been known to visit the
east coast of Honshu during the springtime,
which may be for reproduction patterns.
Survival
•
Listed as "Least Concern" by the World
Conservation Union (IUCN).
• Blue Sharks eat them.
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Human Impact
• Hardly ever comes in contact with humans but
• Large size makes it potentially dangerous to
people.
• They are sometimes caught as a by catch in
deep-water fisheries.
• Have been harmed while trawling.
• People would eat them
• Shark fin Soup
Nick Names
Tiburon duende (Spanish for hobgoblin shark), and requin lutin
(French for imp shark) This shark is known as the goblin shark in
the Unites States, Australia, New Zealand, England, and South
Africa. It also referred too as elfin shark (English ), hiisihai (Finnish),
Japanese neushaai (Dutch), Japanischer nasenhai (German),
kabouterhaai (Dutch and Afrikaans), karsahai (Finnish), Koboldhaai
( Dutch), koboldhai (German), lensuháfur (Icelandic),
mitsukurizame ( Japanese), naesehaj (Danish), Nasenhai (German),
näshaj (Swedish), nesehai (Norwegian), neushaai (Dutch),
schoffelneushaai (Dutch), squalo folletto (Dutch), squalo goblin (
Italian), teguzame (Japanese), teppichhai (German) , trollhaj
(Swedish), tubarão-demónio (Portuguese), tubarão-gnomo
(Portuguese), zoozame (Japanese), and žralok škriatok (Czech).
Works Cited
http://www.flmnh.ufl.edu/fish/Gallery/Descript/goblinshark/goblinshark.html
http://www.sharks.org/species/goblin-shark
http://marinebio.org/species.asp?id=234
http://www.sharktrust.org/en/factsheets/40/goblin-shark.html
http://planetsave.com/2013/04/27/goblin-shark-facts-video-and-pictures/
http://www.sharksider.com/goblin-shark.html