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Dolphins

Difference between human tactile sense and dolphin tactile sense

“Studies of dolphins suggest that the most sensitive areas on the dolphin's body are the blowhole region and areas around the eyes and mouth.”

Citations

Dolphins tactile sense compared to humans’ tactile sense is less developed because humans are able to difference different textures and even communicate with the tactile sense

(It’s called braille language)

“How Do Dolphins Use Echolocation.” Wonderopolis. https://wonderopolis.org/wonder/how-do-dolphins-use-echolocation. Accessed 10 Oct. 2017.

“Seeing With Sound - Echolocation.” PBS. 7 Dec. 2001. http://www.pbs.org/odyssey/odyssey/20011207_log_transcript.html. Accessed 11 Oct.2017.

“Senses.” Seaworld Parks and Entertainment. https://seaworld.org/en/animal-info/animal-infobooks/bottlenose-dolphins/senses. Accessed 11 Oct. 2017.

Dolphin senses

http://www.pbs.org/odyssey/odyssey/20011207_log_transcript.html

http://www.seppo.net/cartoons/displayimage.php?pos=-1131

http://www.newinterestingfacts.com/interesting-dolphin-facts/

Difference between human hearing sense and dolphin hearing sense

a dolphin's auditory nerve supply is about three times that of humans — possibly providing more ultrasonic information to a dolphin's central nervous system for echolocation.

Dolphins hear tones with a frequency up to 160 kHz with the greatest sensitivity ranging from 40 to 100 kHz. The average hearing range for humans is about 0.02 to 20 kHz.

Dolphins

Echolocation

Difference between human sense of smell and dolphin sense of smell

Dolphins are mammals are that developed a complex way of location, communication and orientation. This complex system is called echolocation.

“Dolphins have developed the ability to use echolocation, often known as sonar, to help them see better underwater. Scientists believe this ability probably evolved slowly over time. Echolocation allows dolphins to “see" by interpreting the echoes of sound waves that bounce off of objects near them in the water.”

Use of echolocation

“Using a combination of regular sight and echolocation, dolphins are able to determine the shape, speed, distance, size, direction of travel, and even some basic facts about the internal structure of objects in the water around them. This information is critical for dolphins to find food and navigate in dark or murky waters.”

"While using their sonar to hunt, dolphins and Orcas can simultaneously communicate their position in the hunt, their relation to their neighbor and their closeness to the fish.”

According to seaworld.org because the olfactory nerves of dolphins are absent, it may indicate that dolphins may have no sense of smell, but on the other hand the sense of smell of humans is highly developed that they can differentiate different odors at the same time .

Difference between human eyesight and dolphin eyesight

“Dolphins have acute vision both in and out of the water... they may have the ability to see in both dim and bright light”

Humans could perceive bright lights hundreds of miles distant. On a dark night humans could even see a candle flame flickering up to 30 mi. (48 km) away, but the eyesight under water is limited without the use of water goggles.

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