(het-err-off-riss) is a centrohelid heliozoon - the most speciose group of heliozoa. The heliozoa do not form a natural (monophyletic and holophyletic) group of protists, but a type of organization that have been arrived at from a number of different evolutionary lineages. Heterophrys
is apparently naked, careful scrutiny usually reveals delicate radiating (organic) spicules. the arms terminate on a non-nuclear organizing centre (the dark dot in this cell). Heliozoa
are predators, motile prey is captured after swimming into the arms. This cell seems to have been eating algae. Differential interference contrast.