Usually people think that animals eating only plants or other animals to get energy. But there are some other ways to get energy, for example - the sun.
Such as sponges and algae, corals and zooxanthellae, they mutualism, animals receive oxygen from photosynthesis in bacteria or algae, and bacteria or algae has also been a metabolite of animals as raw material for photosynthesis. In this type of symbiotic relationship, the plant may live in the body of the animal, but the plant remains the independence and integrity of their cells. We are more familiar with the two pairs of "based Friends."
Located in the eastern coastal salt marsh or tidal marshes in the North American Haitian green cow, eat algae-free interval, the chloroplasts in plant cells will be preserved and stored in their cells. These range from algae to "steal" the chloroplast will be able to accompany them life, even though it is only about a year. And relying on these chloroplasts photosynthesis, sea slugs can persist for several months without food or drink. When a young Haitian cattle eat a meal without spacer algae meal, the no longer have to eat, as long as it provides for the photosynthesis of chlorophyll reactive material on the line.
Another animal spotted salamander, it has been everyone thought spotted salamander embryos and algae is a symbiotic relationship. Until 2011 scientists at Dalhousie University, Ryan? Kony found spotted salamander embryo sac inside and outside of the package of bright green. Display indicator cells contain chlorophyll, Hou Keni with a transmission electron microscope confirmed that the symbiont algae is grown in spotted salamander embryos of.
All vertebrate cells are equipped with the acquired immune system, so there will be "rejection" response. From this perspective, as a symbiont algae can not be stable in vertebrate cells survive. Even more surprising is that Kony in the adult female spotted salamander tubal also found algae, this is where the embryo sac formation. So symbiotic algae is likely to be passed on to offspring from the mother through the reproductive process.
(Excerpt from the answer Nutshell network)
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