Forams are a group of protozoans
that are entirely marine, construct a lobed skeleton or "test", and Above..Planogypsina sp?
A foram can be seen in the
centre of this image. The Velutinid about to crawl over it is ------------------------------------------------------
The images below are of forams
from a beach in Okinawa and are about 3mm. Some sands 
FORAMINIFERA
apart from a few planktonic species are found on the seabed or plants.
Some species, such as Marginopora
can grow to 20mm but the majority, like the above, are less than 1mm.
approx 4mm long.
on beaches on these
islands are composed
almost entirely of forams and are known as "Star Sand"
