Dreisena or Dreissena: How To spell?

The word Dreisena is misspelled against Dreissena, a noun meaning "A genus of bivalve shells of which one species (D. polymorpha) is often so abundant as to be very troublesome in the fresh waters of Europe."

Dreissena has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings drei & ena which should not be misspelled with single 'S'
Wrong Spelling:  drei-s-ena 
Correct Spelling:  drei-ss-ena 
Find more wrongly spelled words of Dreissena to spell it well.

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