Robotic Water Creature

1. Will it be controlled?

1.1. Radio control

1.2. Pre programmed path

1.3. Sensors

2. Depth control?

2.1. Compressed air and balloon

2.2. Fins

3. Aquatic motion?

3.1. Anguilliform (eel)

3.2. Subcarangiform

3.3. Carangiform

3.4. Thunniform