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There are a couple of advantages and disadvantages of possessing the eyes of octopuses. The first advantage of the octopus eye is that it has no blind spot. This means that octopuses can see everything that is going on in their environment, and are more aware of predators and prey than some vertebrates. Also, they have many more photoreceptors than ...

Asterosaponins are the class of compounds - they have a cholesterol like organic core. Apparently, these saponins make pore-forming complexes with Δ5-sterols of cell membranes, and so are deadly to all usual kind of life, including bacteria and fungi. Quote: Starfish and sea cucumber cell membranes are resistant to their own saponines due to the ...