Very interesting , @dean !
Let's take a 10x microscope magnification look-see at Hibiscus and Yellow Tabebuia flowers' pollen:
Now let's look more closely at the beautiful pictures from @deandddd's referenced article, starting initially with the microscope image that seems to be a little more than 10x, but pretty close in terms of order of magnification to give context:
Now let's look at non magnified images from their Facebook page:
It is important to note after you've carefully examined these, I would challenge you to now go to Google Images and find 10x magnification of red algae that is comparable to this!
@deandddd I really think you're hitting the target here. The only truly comparable images are the ones from the snow so either this is an entirely different snow species of algae or they're blowing smoke up all of our rear ends with this algae crap story!
Scroll down to: " ROCKS IN ICEBERGS, COLORED SNOW, POLLEN AND DUST IN THE FAR NORTH".