Mount, travel form with aquatic form one button reg. macro

/cast [modifier] Travel Form(Shapeshift)
/cast [swimming] Aquatic Form; [combat] Travel Form(Shapeshift); [nomod] Reins of the Spotted Frostsaber
/dismount [mounted]

add your mount and replace Reins of the spotted frostsaber
hold the shift key if you just want travel form; if your in combat it will go into travel form without shift key