What are some sea animals that start with “O”?

English has quite a few animals that start with O. Some sea animals that start with “O” include:

  • Ocean sunfish
  • Ocellaris clownfish (clown anemonefish)
  • Octopus
  • Olive ridley turtle
  • Oarfish
  • Opah (moonfish)
  • Orca
  • Oyster

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