Did you mayhaps mean one of these? Hydrozoa, hydropot, hydrosol
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“The images include the aquatic machine called a hydrobot (above, attacking a helicopter pilot) and the "Moto-Terminator" (after the jump), a self-propelled motorcycle featured in a chase scene involving Marcus (Sam Worthington) and Kyle Reese (Anton Yelchin).”
“Shows us the hydrobot – tells us how long it takes to design and shows us some secrets we might not know.”
“Exploration of the distant gas giants, Saturn and Jupiter, will be performed by next-generation robotic machines like DepthX, a mushroom-shaped machine, an underwater hydrobot that 'thinks' for itself, which is being developed to search for life on one of Jupiter's moons.”
“isn't that hydrobot coil thing scorponok's tail from transformers?”
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vanishedone Galileo Project: 'If the Europa Orbiter finds a submerged ocean, we could look for landing sites where instruments could descend to the surface, melt through the ice, and deploy "hydrobots" --- submarine robotic explorers.' Mar 9, 2009