Piniped or Pinniped: How To spell?
The word Piniped is misspelled against Pinniped, a noun meaning "One of the Pinnipedes."
Pinniped has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings pi & iped which should not be misspelled with single 'N'
Wrong Spelling:  pi-n-iped  Correct Spelling:  pi-nn-iped 
Find more wrongly spelled words of Pinniped to spell it well.