One genus is Karena, I think.
flagella
plantlike protist that has two flagella and armorlike cell walls.
Mst live in salt water. May be deadly if eaten. It is a poisonous puff fish that if not cut correctly and is eaten it is poisonous and shuts down everything even the brain. Most do not feed on...
Dinoflagellates live in the top 200 feet of the ocean.