Dinoflagellates

Dinos are also considered part of the microzooplankton.
~1,700 marine species identified with many others undetermined.
Most HABs (harmful algal blooms) are caused by dinoflagellates.

Approximately half of dinoflagellate species are photosynthetic. The other half are heterotrophic, meaning they derive energy from organic sources such as plants and animals. <br />
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Such dinos have a type of feeding pseudopod, the pallium, which can be extended to envelop and digest prey. More at this fascinating site:<br />
<br /> <a href="http://skepticwonder.fieldofscience.com/2009/07/sunday-protist-dinoflagellate-eats.html">http://skepticwonder.fieldofscience.com/2009/07/sunday-protist-dinoflagellate-eats.html</a>

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Approximately half of dinoflagellate species are photosynthetic. The other half are heterotrophic, meaning they derive energy from organic sources such as plants and animals.

Such dinos have a type of feeding pseudopod, the pallium, which can be extended to envelop and digest prey. More at this fascinating site:

http://skepticwonder.fieldofscience.com/2009/07/sunday-protist-dinoflagellate-eats.html

Dinoflagellate red tide