Half Hours with the Lower Animals
This book is devoted to the study of invertebrate animals. While most people
associate the word "animal" with fish, amphibians, reptiles, birds, and mammals,
90% of the animal species on earth are invertebrates, i.e., they have no
backbone. Protozoans and invertebrate animals are found world-wide, from the
bottom of the oceans to the the rain forests, ice caves, and our own back yards.
Many invertebrates still reside in the oceans, while others dwell in our houses,
back yards and gardens, in ponds and streams, and on the menus in seafood
restaurants. Holders's book represents a traversal of several dozen familiar and
not-so-familiar animals without backbones whose ancestors date back to the
Cambrian period 500 million years ago.
Total running time 5:08:20
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Cover designed by Availle with public domain images.
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