Main types of macroinvertebrates

Worm-like mollusk arthropod

Pictures reprinted with permission from Leska Fore, King County RegionalWater Quality, http://www.seanet.com/~Leska

Worm Body Plan

Picture reprinted with permission from Kerrie Salo, http://www.compostworms.com

Pictures reprinted with permission from Leska Fore, King County Regional Water Quality,htpp://www.seanet.com/~leska

Some Examples of Different Types of Worm-like Organisms

Segmented Worm-like Organisms

Aquatic Earthworm

Leech

Illustrations by

Graver Pond with Leaves

Non Segmented Worm-like Organisms

Illustrations by

Nematode

Planaria

Horsehair Worm

Leeches on Fish

Horsehair Worm Inside a Grasshopper

Clam Anatomy

Snail AnatomyShell

Foot

Head

Shell

Foot

Siphons

Illustrations by

Snails and Clams

Drawings reprinted with permission from Leska Fore, King County Regional Water Quality, http://www.seanet.com/~leska and The Soil & Water Conservation Society of Metro Halifax, http://lakes.chebucto.org

Photo reprinted with permission from Eric Lind, Audubon Society, http://life.bio.sunysb.edu

Arthropod Families- Spiders, Crustaceans, Insects

Pictures reprinted with permission from Leska Fore,King County Regional Water Quality, http://www.seanet.com/~leska

Fishing spider

Aquatic predator eating prey

Picture reprinted with permission from Clarina Quan, Natural Reserve System, University of California, http://nrs.ucop.edu

Use a Field Guide