The sudisflutans sucks other cells with its long proboscis. Inside the sudisflutans is a higher concentration than outside, so that the insides of the other cells will pour into the sudisflutans via osmosis. The little brown bean-like organelles near the proboscis convert the food into nutrients, so that they can be used by the yellow spindle-like to provide energy for the flagella. The two arm-like structures near the proboscis are for holding the prey while sucking, though they can't be moved. A cytoskeleton is responsible for keeping the cell in form.
Living Relatives (click to show/hide)
None found. Note that this does not necessarily mean it has no living relatives at all, but that, assuming all taxonomy is filled in, its entire phylum is extinct; any relatives it does have likely do not resemble it.