I do not think these remains of microscopic creatures are fossils yet. Here are three images of some foraminifera found near the Plassey ship wreck, Killagoola, Aran Islands off coast of Galway, Ireland. They have a fields of view (FOV) ranging from 1-2 mm. Thanks to Kenny for these images.
Years ago, I traveled to the Aran Islands while visiting Ireland and it was a rough boat ride. Too bad at the time I was not aware of all the neat microscopic remains to found on the beaches.
Below is a map showing approximately where everything was found.
