See also
Find hydralike animals, hydroids, and hydrozoans information at Animal Diversity Web
Hydralike animals, hydroids, and hydrozoans
Hydrozoa
Permissions for Use
The copying of material, either with modifications or adaptations, and its subsequent distribution, is permited with three conditions: that it is not used for commercial purposes, that the source of the material is clearly indicated, and that its use is recorded in such a way that BIODIDAC can provide documentation to the sponsors of the project.
Identifications
feather stars and sea lillies
Crinoidea
heart urchins, sand dollars, and sea urchins
Echinoidea
sea cucumbers
Holothuroidea
hydralike animals, hydroids, and hydrozoans
Hydrozoa
crabs, krill, pill bugs, shrimp, and relatives
Malacostraca
cup animals and jellyfishes
Scyphozoa
Caption
Comparison of larvae types
Contributors
BIODIDAC 
(copyright holder)
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It is a partnership of the University of Michigan School of Education, University of Michigan Museum of Zoology, and the Detroit Public Schools. This material is based upon work supported by the National Science Foundation under Grant DRL-0628151.
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