Pygmy Shark - Arp ISD

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Pygmy Shark - Arp ISD Powered By Docstoc
					My Name is Seth. I
am 9 years old. I like
to play sports, collect
baseball cards, play
video games, and
watch TV. I go to
Arp Elementary. I
also like to swim,
read, and learn new
things. One day I
want to play in the
Olympics and then
become a pro baseball
player.
The spined pygmy shark is one of the smallest sharks; it is
roughly 7 to 8 inches (18 to 21 cm) long (females are about
8 inches fin but not in front of the second dorsal fin (this is
unique among sharks). It also has a luminescent (glow-in-
the-dark) belly.

This harmless shark is very sleek and has a bulbous snout.
It has a large spiracle (an extra, round gill slit) behind
each large eye. It is dark-gray to black with white-tipped
fins and bio-luminescence (luminous photophores) on its
belly; these photophores light up and may serve as
camouflage (they eliminate shadows when seen from
below).
      SPINED PYGMY SHARK
          CLASSIFICATION
      Kingdom Animalia (animals)
            Phylum Chordata
   SubPhylum Vertebrata (vertebrates)
Class Chondrichthyes (cartilaginous fish)
Subclass Elasmobranchii (sharks and rays)
  Order Squaliformes (dogfish sharks)
            Family Squalidae
            Genus Squaliolus
            Species laticaudus
DIET AND FEEDING HABITS
It eats squid, shrimp, and mid-water fish
(especially lanternfishes). This uncommon
shark lives in deep water (down to 6,550 ft
= 2,000 m) but migrates vertically each day
to hunt at night in mid-depth waters (about
650 ft = 200 m).
HABITAT
The spined pygmy shark lives in deep waters (down to 6,550 ft = 2,000
m) but hunts at middle depths (about 650 ft = 200 m).

DISTRIBUTION
The spined pygmy shark is found in temperate and tropical oceans
worldwide.

SPINED PYGMY SHARK ATTACKS
The spined pygmy shark is rarely seen by divers since it lives in deep
waters. It is harmless to people.

                     REPRODUCTION
The spined pygmy shark's reproductive biology is unknown.

MIGRATION
This uncommon shark lives in deep water (down to 6,550 ft = 2,000 m) but
migrates vertically each day to hunt at night in mid-depth waters (about
          Special Thanks To…………..

http://www.enchantedlearning.com/subjects/sharks/spe
cies/Spinedpygmy.shtml


http://www.yahoo.com/

  http://www.zoomschool.com

				
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posted:7/15/2011
language:English
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