Crossword Genius

Create no resistance about confusion in marine order (7)

Ross

I believe the answer is:

cetacea

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'order' is the definition.
(Cetacea is an example)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for cetacea that I've seen before include "Order including whales" , "Order of whales, etc" .)

I've seen this clue in the Sydney Morning Herald.
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