December 15, 2017

Invertebrates

Invertebrate

Invertebrates are animals with no internal skeleton or backbone. Invertebrates make up about 95% of all animal species on Earth. Types of invertebrates include annelids, arachnids, cnidaria, crustaceans, echinoderms, insects, mollusks, and protozoa. Exceptions include amphibians, birds, fish, … [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...]