and is
neritic worldwide, belonging to the marine or brackish water
Bravo-Sierra (2004) described the genus
as coastal in polluted areas with high organic contamination,
with no outbreaks or associated toxicity. No harmful bloom of
Eutreptiella has been seen on Egyptian coastal waters
before. It was previously recorded as a rare form in the
Eastern Harbour southeastern Mediterranean Sea during
1997—1999 The species was possibly new in
the Mediterranean Sea, and so may have been introduced via
ballast water. The findings of the genus during this study
underline that ballast water releases may have been the
likely introduction vector. The genus was also recorded in
Kuwait's waters It is common in the
Baltic coastal waters, but rarely in high numbers in Japan Sea and in Turkish Seas
In 1990, itformed
a bloom along the north shore of Nassau County, New York