Use Advanced Search to search by activities, standards, and more. Of all the living organisms on Earth, humans are perhaps most familiar with animals. City dwellers might find birds or squirrels in a park or keep domesticated dogs, cats, and goldfish as home pets.
Humans living in rural areas might raise pigs or chickens, or encounter coyotes or snakes. These familiar animals are generally vertebrates, or animal species with backbones.
However, only three percent of all animal species are vertebrates. The vast majority of animal species do not have backbones.
These animals are called invertebrates. Invertebrates occur in many different sizes and shapes Fig.
Some invertebrate species, such as nematode roundworms, are microscopic organisms that are only a few millimeters long. Some invertebrate species, such as crabs or snails, are easily recognizable as animals, with a distinct head, eyes, and mouth.
Others have a very different body plan, often without obvious heads.
Sea stars, sponges, and corals are good examples of these. Some invertebrates, including fast-swimming squid or flying insects such as bees, dragonflies, and moths, can move very quickly.
Others species, such as corals, fan worms, sea anemones, and sponges, remain stationary for much, if not all, of their lives.
Invertebrates are important to humans in many respects. Species of marine invertebrates that are valuable as seafood include squids, clams, oysters, shrimp, and crabs. On land, insects can both consume and protect crops and can pollinate flowers.
Some insects, such as mosquitoes and fleas, are known to spread human diseases. Since invertebrates comprise the vast majority of animal species on Earth, it is important to develop an understanding of their biology and an appreciation for their biodiversity.
Principle 5: The ocean supports a great diversity of life and ecosystems. Ocean Literacy Fundamental Concept: Ocean life ranges in size from the smallest virus to the largest animal that has lived on Earth, the blue whale OLP 5a.
To build an understanding of ocean life and diversity, it is important to appreciate that much of that ocean diversity is made up of invertebrate animals. These concepts will be explored in this unit through the following activities and investigations:.
Teaching Science as Inquiry (TSI)
Investigate the behavior of various aquatic invertebrate taxa through careful experimentation and observation. This document may be freely reproduced and distributed for non-profit educational purposes. Skip to main content. Search form Search.
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Home Biological Invertebrates Introduction to Invertebrates. Introduction to Invertebrates. Ocean Literacy Principles Principle 5: The ocean supports a great diversity of life and ecosystems.
Become an invertebrate expert and teach your classmates about your specialization. View unfired and fired nematocysts under a microscope.
Examine coral specimens in detail and record their features. Describe differences among gastropod shells. Examine the internal and external features of a squid. Use investigative skills to compare different groups within the phylum Echinodermata. Compare the structure and function of larval and adult tunicates.
Vertebrates - The Dr. Binocs Show - Educational Videos For Kids
Table of Contents: Introduction to Invertebrates. Representative Image:. Further Investigations: What is an Invertebrate? Question Set: What is a Mammal? Further Investigations: What is a Mammal?
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