The new devices are traveling in deep oceans.

The problem with small robots that patrol the ocean and measure pollution and other things is their power source. Nuclear power or RTG (plutonium batteries)  is a powerful tool. But those things are dangerous in the wrong hands. Things like nuclear submarines could load electricity to the photovoltaic cells of those machines by using lasers. But the problem is that navy might want to use their nuclear-powered submarines for many other purposes. 

The new algae-powered soft devices can be fundamental in the research of independently operating nano- and miniature machines. One of the biggest problems with independently operating nanomachines is the power source. The system can use synthetic, lab-grown muscle cells. 

They are connected to tiny electric wires. And nanotechnical microchips are not using very much energy. The problem is how to make those tiny machines operate in deep dark places. 

And one of the solutions is to use bioluminescence. In that case, the miniaturized microchips get their energy from the small photovoltaic cells. They are getting light from living bioluminescence cells. And also if lab-grown neurons are connecting with the microchips. They are increasing the power of those systems. The nanotechnical microchips don't need very much energy. And the thing that requires electricity in those half-biological robots is the control system. The living cells need only nutrients. 

Also, things like piezo-electric and thermo-electric crystals can give electricity to small machines. In those cases the main system gets its electricity from crystals that are stressed by using sonar signals or the heat from muscle cells can use for that thing. Living tissue can use normal nutrients. 

By the way...

Bigger robots like small ball-shaped quadcopters can also patrol the ocean and use green energy. In that kind of system, the robot can use solar power. When the batteries of those systems end while the robot operates in the sea it can simply rise to the surface. And the robot can wait until the sun loads its batteries. 

Then the system can send a GPS signal to a satellite that tells the communication system and command center that their robot is ready for action. The system can store data in the flash memory and send it to the command center. But there is a possibility that the system just uses a vertical tube into the ocean. And then the capillary effect puts the small generator to rotate. 

https://scitechdaily.com/algae-powered-soft-devices-glow-in-the-dark-when-squished-or-stretched/

https://onlyimaginationlimitsinnovation.blogspot.com/

Water is not similar everywhere.

   

 Water is not similar everywhere. 

The water on Mars is not in the form that it is on Earth, say NASA scientists. The thing is that there are many forms of water in the universe what is different than we know that liquid. There are deep oceans on the icy moons like Ganymede and Europa. 

Those oceans on single icy moons are involving more water than on Earth. The icy moons like Enceladus have icy geysers. And that makes them interesting places. There is the possibility that some tiny, primitive organisms are living in those oceans. They might get their energy from the volcanic temperature that is created by the tidal forces of the giant gas planets. 

But the thing is that those oceans are different than oceans on Earth. The tidal waves are keeping those oceans liquid. And the thing is that the gravitation on those moons is weaker than on Earth. So the pressure in those oceans is lower. 

And that makes water more moving than it moves on Earth. The distance of water molecules in those oceans is higher. That means fiction is lower than it's on the Earth. So water moves more easily and the effect of tidal forces is higher than it's on the Earth 

When we are thinking water, we mean the chemical combination called H2O. But the form of the H20 can be very different than we ever imagine. Oxygen and hydrogen can be connected to other atoms and stored in molecules in stones. So the thing is that. Those gasses can locate on planets. Even there is no water or even atmosphere.  The thing is that planet can be full of water. And it can seem dry. In those cases, water can be connected to minerals. 

In some cases, water can easily separate from minerals simply by heating it. One of the minerals that seem dry but heat is releasing water vapor is copper sulfate. And on many other planets, the atmosphere can be so hot. That there are no water drops. That means the atmosphere can be full of vaporized water. But it cannot touch the surface of that planet. 

Also, the friction of the high-speed winds of the atmosphere of gas planets can keep water in vaporized form. Or the wind is breaking the ice so small bites that they are flowing at atmosphere which temperature is only a couple of kelvin. That kind of "smoke ice" (small particle ice) is found in the atmospheres of Uranus and Neptune. So the form of the water in other planets can be far away from what is on Earth. Also, the deep oceans of some planets can involve water. 

That pressed to solid form. Extreme pressure can form a thing called "hot ice". In those cases, pressure is the thing that denies the movement of the water molecules. That kind of situation can be on hot planets. And there is water that is far different than water is on our planet. 

https://scitechdaily.com/we-asked-a-nasa-scientist-is-there-water-on-mars-video/

https://en.wikipedia.org/wiki/Ganymede_(moon)

https://en.wikipedia.org/wiki/Enceladus

https://en.wikipedia.org/wiki/Europa_(moon)

https://en.wikipedia.org/wiki/Neptune

https://en.wikipedia.org/wiki/Uranus

https://thoughtsaboutsuperpositions.blogspot.com/