Jonah - Jellyfish Information Report
Introduction.
Today I am writing about a sea creature that has no brain, heart, bones or eyes... A jellyfish.
Habitat.
Jellyfish have been found at the bottom of the ocean and near the surface. Jellyfish can be found around the world in every type of ocean water.
Diet.
Jellyfish eat small plants, fish eggs and other small fish called larvae. They also eat the planktonic eggs.
Interesting facts.
Jellyfish have no brain, heart, bones or eyes. They are made up of a smooth, bag-like body and tentacles with tiny, stinging cells.
Predators (Enemies).
The predators of a Jellyfish are tunas, sharks, swordfish, sea turtles, penguins and sea anemones.
Life-Cycle.
Jellyfish start off as an egg.
That egg grows to become a planula.
That planula gets attached to the ocean bed.
The attached planula develops into a polyp.
The polyp starts to bud.
The budding polyp grows to an ephyra (an Immature Jellyfish).
The ephyra grows into a young adult Jellyfish and the young adult grows to a full adult Jellyfish.
Appearance.
A jellyfish jiggles like gelatin, and some just look like small, clear blobs. Others are bigger and more colorful with a bunch of tentacles that hang down underneath them, kind of like an octopus.
Life-Span.
Most jellyfish are short lived. Adult jellyfish typically live for a few months, depending on the species, although some species can live for 2-3 years in. Polyps can live for several years, or even decades.
