It seems to be like some of the scales slightly off?
If you are looking at the ladybird (ladybug) with the amoeba to the left, the amoeba isn't an order of the magnitude smaller - it would actually be visible by the human eye (bigger than a grain of sand)? Indeed, the amoeba seems the same size as the ladybird's foot?
Similarly, this makes the bumblebee appear smaller than a human finger (the in the adjacent picture), which isn't the case?
I'm seeing the amoeba as approximately the size of the heel segment of a ladybug's leg. I consider lady bugs pretty small in an intuitive sense, their legs quite small and the smallest end segment to be especially small. I think that leaves an amoeba on the fringes of distinguishable perception which seems right to me, unless I'm overestimating their size.
I came to the comments to express surprise that amoebas were so large. It appears they vary wildly in size (as small as 2.3 micrometers... but up to 20 cm, or nearly 8 inches).
But if scales were perfectly respected, how could you see both a neuron and a human on the screen?
The tardigrade vs. ladybug gave me pause. So a tardigrade is about the side of a ladybugs eye?
The T-rex appears taller than the giraffe, but it isn't and the scale in the website itself shows it.
Cool visualization, but I also noticed the switch from SI units to imperial. From micrometers to inches, which was jarring and hard for me to compare.
I'd suggest keeping the SI unit , or at least having both once we get to the level of inches.