Things You'll Need
Instructions
Select a healthy seahorse to undergo a journey by next-day mail. You must select next-day mail.
Find a cardboard box with a Styrofoam core that fits snugly inside the box.
Open the halves of your Styrofoam core, and use a utility knife to cut out a space inside that will accommodate your seahorse's bag and nothing else. Make sure that whichever way the box is oriented, there's enough headroom for your seahorse be upright in the water.
Fill a bladder bag one-third full with the aquarium water your seahorse is accustomed to.
Place the seahorse in the bag. Crimp the bag's mouth tightly around the nozzle for your oxygen tank and fill the remaining two-thirds of the bag with pure oxygen.
Clip the bag tight, leaving about 1 inch of slack over the clip. Place this bag inside another clear bag and clip the outer bag tightly too, with slack to spare.
Place the seahorse inside the Styrofoam cut-out and make sure the fit is correct. Tape the bag with packing tape to the Styrofoam to ensure it won't be tossed around during shipping.
Place the Styrofoam core inside the cardboard box and seal it tightly with packing tape.