Intertidal Zone

Sea Urchin


The sea urchin is three to four inches in length and height. The sea urchin has interesting pins under its spikes to use for protection. The underside of the sea urchin's mouth has sharp cutting edges. This is where they chop up pieces of food, so they can swallow it easier and faster. The other side of the mouth is the strong chewing side. They use this side to chew food, into mush, so they can swallow it.

Scientist who study the sea urchin have many nick names for them. One of the common names is the hedgehog. They are dangerous, only because of the spikes. If they didn't have spikes, they would be harmless.

Their scientific group is the echinidae. There are many kinds of sea urchin. There are some that are called Green sea urchins. The Pacific species' color is violet.

 Many of the sea urchins are being hunted. The season for reproduction is May of every year. Not only the female lay eggs and cells, but the males also lay eggs. Scientist have found more than 750 kinds of sea urchin in the oceans. Some kinds of the sea urchins are poisonous, and scientists can tell if they are poisonous by their color, size, and shape.


Daisy Brittle Star

Daisy Brittle stars' cousin is the starfish. The Brittle Star moves quickly and efficiently. In size, the star's arms are four inches. The middle disc is 3/4 inch in size. The Daisy Brittle star also has five non-blue arms. I bet you are wondering what happens when their arms break or fall off? Like star fish, they can regrow their arms. Brittle stars live in world -wide seas. This star is classified under Enchinoderm. The Daisy Brittle star abandons its eggs. The Brittle star has needles on its arms. People say that the Daisy Brittle star can bury itself in the sand. The color of the star's disc is red. The arms are red and white. In the middle of the disc is a blue star. That is my report about the Daisy Brittle star.


Sea Anenome

The sea anemone lives on the bed of submarine gardens. Sea anemones are not flowers. They are carnivores. Fishes are immediately eaten by a sea anemone. The tips of the sea anemone are stinging cells. As the cell opens up, it expels a filament that attacks its victim. People call the sea anemone a well- armed beauty. They eat small fish and others. If they go a long time without food, they will shrink. Sea anemone lives in all the oceans and at different depths. The sea anemone in real size is 3.1/4 feet. The sea anemone is poisonous. There are thousands of species for the sea nemone. That is my report on the sea anemone.


Sea Turtle

Turtles live in tropical areas. Most turtles live on islands. Fiji, Galapago, Hawaii, Maui, and Solomon Islands are common places to find a turtle, a sea turtle or land turtle. Turtles have lived for over two-million years. Their neighbor was the dinosaur when they roamed the Earth. Many people believe that the hard shell on the backs of the turtle are such good protection that it has kept the turtle alive for so long. Turtles also have the ability to tuck their head, feet, and tail inside their shell to keep them snug and safe.

 I'm sure you've heard of the Tortoise and the Hare. I am also sure you've wondered why it's called the tortoise and not the turtle. The fact is, turtles fall into many categories including sea turtles, land turtles, freshwater turtles, and tortoises. Different characteristics and abilities allow turtles to live the individual way they do.

 One of the amazing facts about the turtle is that human ribs help our lungs expand and allow us to breathe. The turtles' ribs are attached to their shell, but the turtles' legs help its lungs to expand and the turtle to breathe. This is just one of the things that make the turtle so amazing!


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Date Updated: January 18, 2001