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It common knowledge that we have five senses. Some people they have six senses. They say their sixth sense is the ability to something without using the ordinary five senses of sight, hearing, smell, touch and taste. Scientists have just that some dolphins have seven senses. Researchers in Germany say bottlenose dolphins can electricity produced by their prey. The dolphins can the electric pulses produced by the heart beats of other sea creatures. This could dolphins to find their next meal. Dolphins also their excellent eyesight and sonar to sense what is around them. This seventh sense may also them to using Earth's magnetic field.

The researchers a study on two dolphins named Dolly and Donna. Experiments what kinds of electricity the dolphins could detect. Dolly and Donna could sense both kinds of electricity - direct current and alternating current. They a lot better at up direct current. All organisms direct current electricity in water. The researchers say being able to this means dolphins may be able to the location of most kinds of fish that are near them. The dolphins could use their seventh sense to , even if they cannot see or hear well, or if they cannot their other senses. The study has been in the "Journal of Experimental Biology".