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Researchers tested what  bettercloudycreaturescurrentkindsnearotherthistwowell of electricity dolphins could sense. They sensed  bettercloudycreaturescurrentkindsnearotherthistwowell kinds. They were  bettercloudycreaturescurrentkindsnearotherthistwowell at sensing direct  bettercloudycreaturescurrentkindsnearotherthistwowell electricity. All sea  bettercloudycreaturescurrentkindsnearotherthistwowell produce this. Being able to sense this helps dolphins to know how  bettercloudycreaturescurrentkindsnearotherthistwowell other fish are to them. Dolphins could use  bettercloudycreaturescurrentkindsnearotherthistwowell to hunt, even if they cannot see or hear  bettercloudycreaturescurrentkindsnearotherthistwowell. Sometimes the water is  bettercloudycreaturescurrentkindsnearotherthistwowell, so they cannot use their  bettercloudycreaturescurrentkindsnearotherthistwowell senses.