JELLYFISH

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JELLYFISH
JELLYFiSH !

• By Mayra Allen

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About Jellyfish !

• Jellyfish are members of the phylum Cnidaria, a
  structurally simple marine group of both fixed
  and mobile animals sea anemones, sea whips,
  corals and hydroids are polyps that grow attached
  to rocks or other hard surfaces jellyfish and
  colonial siphonophores like the Portuguese
  man-of-war are mobile (either actively swimming
  or subject to winds and currents). Inherent to
  both types of life history is their radial
  symmetry (body parts radiating from a central
  axis). This symmetry allows jellyfish to detect
  and respond to food or danger from any direction.
• Instead of a brain, jellyfish possess an
  elementary nervous system, or nerve net, which
  consists of receptors capable of detecting light,
  odor and other stimuli and coordinating
  appropriate responses.
• Jellyfish come in a wide variety of sizes, shapes
  and colors. Most are semi-transparent or glassy
  and bell-shaped, measuring less than an inch to
  more than a foot across the bell, although some
  may reach seven feet in diameter. The tentacles
  of some jellyfish can reach lengths greater than
  100 feet. Regardless of their size or shape, most
  jellyfish are very fragile, often containing less
  than 5 solid organic matter.

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Body Structure !!
SiDE ViEW!
TOP VIEW !
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H0W THEY 0BTAiN F00D !

• Jellyfish are carnivorous, feeding mostly on a
  variety of zooplankton, comb jellies and
  occasionally other jellyfish. Larger species,
  however, are capable of capturing and devouring
  large crustaceans and other marine organisms.
  They are passive drifters that feed on passing
  small fish and zooplankton that become caught in
  their tentacles. Although primarily drifters,
  jellyfish are predators. They are able to stun
  and kill their prey with stinging cells called
  nematocysts.

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HABiTAT !

• Many jellyfish live in oceans around the world
  and are capable of withstanding a large flux of
  temperature and salinities but are most commonly
  found in warm, shallow coastal waters. However,
  some live in depths of over 12,000 feet.
  Jellyfish live in oceans and seas of all around
  the world, in shallow or deep waters and in some
  rivers and lakes too.

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REPR0DUCTi0N!
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iNTERESTiNG FACTS!

• Jellyfish fact Jellyfish has been around for
  more than 650 million years which means that they
  outdate the dinosaurs and the sharks. Jellyfish
  fact Different species of jellyfish can be found
  in all the worlds ocean. Jellyfish can even be
  found in freshwater. Jellyfish fact A species
  of jellyfish, the Box jellyfish (sea wasp) kills
  more people than any other marine creature.
  Jellyfish fact The worlds largest known
  jellyfish can reach a diameter of 2.5 m/ 8ft and
  their tentacles can grow to be half the length of
  a football field. Jellyfish fact Jellyfishes
  uses jet propulsion to make their way through to
  oceans of the world. Some jellyfish is avid
  swimmers while other mostly drifts with the
  currents. Jellyfish fact Some species of
  jellyfish contains a lot of protein and is
  thought to be able to play a large role in ending
  hunger and malnutrition in poor areas around the
  world. Jellyfish fact Jellyfish is able to
  reproduce both sexually and asexually during
  different parts of their lifecyclesJellyfish
  fact what enables them to survive is their
  stinging tentacles that protects them from being
  preyed on.