June 25, 2017

Reptiles

The Crocodile is a common type of Reptile

Reptiles are some of the oldest life forms on Earth, with fossils dating back about 320–310 million years. Reptiles are cold-blooded, four-legged vertebrates that inhabit every continent of the world, except Antarctica. A reptile's skin is covered with a tough external plate or scute, such as the … [Read more...]

Mollusks

Mollusk

Mollusks are invertebrates that live in ocean, freshwater and terrestrial habitats. It is estimated that there are as many as 120,000 different species of mollusk. There are several different classes of mollusk. The most common mollusks are the gastropods (e.g., snails and slugs), the cephalopod … [Read more...]

Insects

Insect

Insects are a type of invertebrate, meaning they don't have an internal skeleton or backbone. Insects are also a type of arthropod. The term arthropod comes from the Greek word meaning "jointed feet," and includes other similar animals such as crustaceans and arachnids. Insects are one of the … [Read more...]

Echinoderms

Sea Star or Starfish

Echinoderms are a type of invertebrate found in marine or ocean environments. Common echinoderms include the sea star, sea urchin, sand dollar and sea cucumber. Most echinoderms have arms or spines that radiate from the center of their body. The central body contains their organs, such as mouth for … [Read more...]

Cnidaria

One common type of Cnidaria is the Jellyfish

Cnidaria are a class of invertebrates found in aquatic or marine environments. The name Cnidaria comes from the Greek word "cnidos," meaning stinging nettle. There are about 9,000 species of cnidaria, the most common being the jellyfish, sea anemone, and coral. Cnidaria come in two different body … [Read more...]