Sapphire Sea
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A: (16 bars): Circle left. First corners right-hand turn. Second corners left-hand turn. Ones do a wide cast, twos lead up and wide cast out, ones move up to face 2nd woman, with the 1st woman in front of your partner.
B: (16 bars): Dolphin hey, women passing right shoulder to start, finishing in a line facing up with the ones in the middle (from the left: M2-M1-W1-W2). Up a double and back - stay in the line. Twos gate the ones up and round into progressed place.
Don't say “form a line” at the end of A or people will join hands facing up and then you have to explain that they don't face up and it's actually a column not a line. Try my wording, without any long pauses to break the flow, and see if it works!