Animals having no backbone or spinal column, such as insects,
mollusks, crustaceans, worms, and similar organisms. USGS Zebra
Mussel Monitoring Program for north Texas [ More info] General
characteristics of this invasive freshwater mollusk, focusing on
how we monitor its presence and migration through this region.
West Nile Virus (WNV) [ More info] National Wildlife Health
Center studies the West Nile Virus to learn the current
geographic extent, to understand how the virus moves between
birds, mosquitoes, and humans, and to predict future movements
of the virus. Whales and walrus: tillers of the seafloor [ More
info] Report on sea floor marks in the Northeast Bering Sea and
Chukchi Sea that were identified as pits and furrows caused by
whales and walruses in the process of feeding on bottom
crustaceans. Alphabetical Index of Topics a b c d e f g h i j k
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