
1) Amphibious volkswagen
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https://www.crosswordclues.com/clue/water-beetle

A water beetle is a beetle adapted to living in water. Water beetles can only live in fresh water/chlorinated water. Water beetles rise to the water surface and take air into their tracheal systems. There are approximately 2000 species of water beetles. The rest marine species tend to live in the intertidal zone. Water beetles are black, brown, or...
Found on
http://en.wikipedia.org/wiki/Water_beetle

• Any one of numerous species of aquatic beetles belonging to Dytiscus and allied genera of the family Dytiscidae, and to various genera of the family Hydrophilidae. These beetles swim with great agility, the fringed hind legs acting together like oars.
Found on
http://thinkexist.com/dictionary/meaning/water_beetle/

any of several thousand species of aquatic beetles (order Coleoptera), including members of the families Haliplidae (crawling water beetles), ... [2 related articles]
Found on
http://www.britannica.com/eb/a-z/w/13
Wa'ter bee'tle (Zoology) Any one of numerous species of aquatic beetles belonging to
Dytiscus and allied genera of the family
Dytiscidæ , and to various genera of the family
Hydrophilidæ . These beetles swim with great agility, the fringed hind legs acting together like oars.
Found on
http://www.encyclo.co.uk/webster/W/11

[
n] - any of numerous aquatic beetles usually having a smooth oval body and flattened hind legs for swimming
Found on
http://www.webdictionary.co.uk/definition.php?query=water%20beetle
noun any of numerous aquatic beetles usually having a smooth oval body and flattened hind legs for swimming
Found on
https://www.encyclo.co.uk/local/20974

Aquatic beetle with an oval, flattened, streamlined shape. The head is sunk into the thorax and the hindlegs are flattened into flippers for swimming; there is a wide variation in size within the species; they are usually dark or black in colour and the entire body has a resplendent sheen. Both the adults and larvae are entirely aquatic, an...
Found on
https://www.encyclo.co.uk/local/21221
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