Ground, Diving and Water Beetle Families (Adephaga)

The Dytiscidae, from the Ancient Greek word δυτικός (dutikós), meaning "able to dive", are the predaceous diving beetles, a family of water beetles.

Tiger beetles or the Cicindelidae are a family of beetles known for their aggressive predatory habits and running speed.

The whirligig beetles are water beetles, comprising the family Gyrinidae, that usually swim on the surface of the water if undisturbed, though they swim underwater when threatened.

The Haliplidae are a family of water beetles that swim using an alternating motion of the legs.

Noteridae is a family of adephagan water beetles closely related to the Dytiscidae, and formerly classified with them.

Ground beetles are a large, cosmopolitan family of beetles, the Carabidae, with more than 40,000 species worldwide, around 2,000 of which are found in North America and 2,700 in Europe.