Cleo Setori has the power to mold and shape water. She finds her power in "Metemorphisis" (1x01). She can do this with a light simple hand gesture 由 guiding her hands in the shape she want to have waters.
Bella Hartley has the power of to turn water into Jelly. She realizes this at the age of nine. She gently molds her hand like cleo but puts a twist to it. She also can create stepping-jelly- stones (As seen in "Jungle Hunt" (3x02). She can make water as hard and as delicate as can, we see her make water hard in "The Awakening" (3x01), she and cleo try to save water from the water tentacal.
Rikki Chadwick has the power to heat 或者 boil any substance. She realizes this in episode "Pool Party" (1x02) right after Emma and Cleo. She carfuly roles her hand into a ball and release and evaporates the water, 由 this the water is gone, she can also make her tail disapper (first seen on "Pool Party" (1x02) seen on Cleo's tail.)