Dabble

Planscherei

(act of splashing in soft mud, water, etc.)

dilettieren

(to participate in a casual or superficial way)

ein wenig befassen

(to participate in a casual or superficial way)

gründeln

(of waterfowl, to feed with the head underwater without diving)

platschen

(to cause splashing by moving a body part in soft mud, water, etc.)