Shark Repellent Repel Sharks while Scuba diving, Surfing, Fishing, Spearfishing, Kayaking and general ocean water activities. Rut Grenades Shark Repellent has the potential to save lives and avoid would be shark attacks. Avoid Shark contact and mistaken identity Removes Sharks from your general area Easily store in your Life Vest , Swimsuit or Scuba Gear