Split apart the bottom and top halves of the Hoagie Roll. Onto the bottom bun, spread any desired condiments such as mustard or mayonnaise.
Layer the sandwich ingredients onto the sub: salami, ham, onions, tomatoes, lettuce, and cheese.
With one of the cheese slices overhanging the edge of the sandwich, cut out a series of small triangles, using a knife or kitchen shears, to create the appearance of teeth.
Tuck two pickle spears into the sandwich, one on either side, so that they lay mostly outside of the sub, resembling fins.
Top sandwich with the top bun (spread with any additional condiments you would like such as more mayonnaise or oil and vinegar). Cut small, shallow slits out of the “front” of the sandwich (the side with the “teeth”), to resemble gills.
Attach two olives (or olive halves) to the front of the sub using food picks. (Make sure to remove these prior to eating.) Attach two half-slices of cucumbers to the top and back of the sub by tucking into the bun or using food picks; these will be your top and tail fins.
Repeat with additional sandwiches, if desired. Enjoy your Shark Submarine Sandwich!