Centipedes

The word centipede means "100 legs", but these invertebrates do no have 100 legs. They move fast and are carnivorous. They live in moist habitats like, under rocks and logs. A common centipede is the house centipede. That was about 2 inches and has 15 pairs of legs. An interesting fact is that some can glow in the dark. The largest centipede is 10 inches and 1 inch wide. Their body structure includes a hard exoskeleton and jointed legs. They have a flattened, segmented body, long antennae, and a lot of legs. Each body part has a pair of legs and can regenerate. The body is divided into two parts, the head and a trunk. They breathe through spiracles, mostly known as holes all along the body. They are carnivores and use venom to kill their prey. Their bite can be painful to a human but cant kill them. They eat insects, worms, spiders, slugs, and other small animals. The largest one also eats mice and some small lizards. The average female can lay up to 60 eggs.

Centipedes

Centipede

Earthworms

• A well-fed adult will depend on what kind of worm it is, how many segments it has, how old it is, how many segments it has, and how old it is. They will grow from 90-300 millimeters long. The longest worm ever found was 22 feet long. A worm has no arms, legs, or eyes. They live where there is food, moisture, oxygen, and a good temperature. They tunnel into the soil and bring subsoil closer to the surface. Slime comes from earthworms and contains nitrogen which is important for plants. They are cold-blooded animals and have the ability to regenerate.
  They don't have eyes but they can sense light. They are hermaphrodites and eat their weight each day.
  Worms
  earth worms

Sand Dollars

The Sand Dollar is a spiny, hard-skinned animal that is shaped like a coin. They live on the sandy sea floor, most sand dollars are found at depths of 30 to 40 feet (9-12 m) and sand dollars partly bury themselves under the sand, with an edge poking up out of the sand. Sand Dollars are echinoderms, and are related to sea urchins and sea stars. Sand Dollars have 5-part radial symmetry. These invertebrates have a hard skin made of calcium carbonate plates. The bottom surface contains the mouth, many black spines (which trap food), and the cilia (small hairs) that help direct food into the mouth. Sand Dollars have tiny tube feet that are used as gills. The holes on the top surface are where the eggs and sperm are released. Sand Dollars eat tiny particles of food that float in the water.

Sand Dollars
Sand dollars

Clams

Clams are animals that burrow under the sea floor. They are bivalves, mollusks that have two shells to protect a soft body. There are over 15,000 different species, worldwide. The biggest clam is the Giant Clam, that is up to 4.8 feet and weighs 550 pounds. Most clams are only a few inches long. They are many colors like brown, red-brown, yellow, and cream. When a clam is threatened, the clams will pull their body into the shells and close them for protection. Clams have a foot to burrow into the sand and tube-like siphons to draw in water. They extract oxygen from this and also filter plankton to eat.

Clams

Hookworms

A few things about hookworms is that they, suck blood, can be transmuted to unborn pups, and can infect humans. The life cycle of a hookworm has three stages. The adult hookworm lives in the small intestine of its host where it hangs on to the intestinal wall using six sharp teeth. The hookworm feeds by drinking its host's blood. The adult worm produces eggs that are then released into the intestine and passed into the world. The egg hatches into the environment and develops a larva, the first stage. Then to a second stage larva and then a third stage larva ready to infect a new host and star the process over again.


hookworm
hookworms

Tapeworms

Tapeworms are a whitish color, they look like a piece of spaghetti, and live in an animal's intestine. It is hooked onto the intestinal wall by a rostellum. A rostellum is a structure that looks like a hat with hooks on it. The tapeworm also has six rows of teeth for grabbing. The typical tapeworm is about six inches long, but can reach up to the size of a school bus. The longest one was 37 feet.  The tapeworm is a hermaphrodite.
Tapeworm

Tapeworms

Purple Jellyfish

Purple Jellyfish can grow to 40 cm across. When first discovered, this type of jellyfish glowed in the dark. This was because it feeds on dinoflagellates. They have only been seen on the california coastline and haven't been spotted in any other location in the world. Purple Jellyfish have only a few catch tentacles trailing from its bell and five feeding tentacles surrounding its mouth.
Purple Jellyfish
Jellyfish

Barrel Sponge

 

Barrel Sponges can get big enough to fit an entire person in it. The outside surface is hard and rigid but  their rim is thin and delicate. Like most other sponges, they are filter feeders. This means that they use millions of tiny flagellated cells to move water through channels in their body and to capture bacteria sized food particles. They stay deep into the water.

Barrel Sponge