Mermaids (2003)

Diana, a stubborn mermaid, is determined to bring justice to the men who
killed her merman father. Never having lived out of water before, she
enlists the help of her two sisters (already living on land) to track
down the murderers. Diana finds that her sister, Venus, is an
aquatic dancer in a seedy bar who was forced into the
position by the evil bar owner who has taken Venus'
magic tiara, giving him ultimate control of her. June,
the third sister, works at the local aquarium and is
able to recruit the help of her friend, and love
interest, Randy, a coast guard officer, to
help the mermaids track down their
father's killers. The sisters join
forces and along the way,
discover how difficult it i
s to be a fish out of
water, and how
meaningful
sisterhood
is