Possible Clues:

• They mean to get confused with one bloomer - in the sea, perhaps
• There's a 17 down sort of this blooming thing
• Garden flower
• It might mean to be blooming in the sea with one more
• Colourful plant of buttercup family
• The confused name of the one blooming thing that may be in the sea
• Wind-flower
• Mean to get blooming well twisted over one (7)
• The blooming name gets confused over you
• Flowerlike polyp