Shark-proof wrist band comprising an electromagnetic-based shark repellent system

A wearable device for wearing by a user and for generating an electromagnetic signal to repel underwater aquatic animals, the device comprising:

• a strap or band for removably attaching the wearable device to the user;
• a sensing component for scanning an area surrounding the user, and for collecting information during scanning;
• a detection component for receiving and analyzing the information collected during scanning, for detecting an underwater aquatic animal based on results of an analysis, and for generating a control signal responsive to the results;
• a signal generating component for receiving the control signal and for generating an electromagnetic signal responsive thereto, wherein characteristics of the electromagnetic signal are determined according to a species or breed of a detected underwater aquatic animal;
• a fractal geometry antenna responsive to the electromagnetic signal for transmitting the electromagnetic signal to create a field in an area proximate the user, the field for repelling the underwater aquatic animal;
• and
• a water sensor for enabling the device to transmit the electromagnetic signal when the water sensor senses presence of water.