Simplify the following text for a Grade 10 native English-speaking person.
Original: Eukaryotes are also found in l'Atalante , including ciliates ( 45 % ) , dinoflagellates ( 21 % ) and choanoflagellates ( 10 % ) .
Simplified: Eukaryotes are also found in l'Atalante , mostly ciliates ( 45 % ) , dinoflagellates ( 21 % ) and choanoflagellata ( 10 % ) .