It is said that there is a creature in the ocean that is smarter than a gorilla, and it is a dolphin. Dolphins are one of the animal families with the highest IQ. They have a gentle, friendly, lively and active character and are universally loved by humans all over the world.
Dolphins are mammals that live widely in the world's oceans. They usually live in groups and prey on sea creatures such as fish and squid. Dolphins have smooth skin, strong bodies, and are very flexible. They are good at jumping and snorkeling. They are the fastest mammals in the water.
Dolphins are very cute creatures. Here are some characteristics of dolphins. I believe that after reading this, you will deepen your understanding of dolphins.
1. Dolphins have no sense of smell
Many people know that dolphins have extremely acute hearing, but you may not know that dolphins have no sense of smell because they lack the olfactory nerve.
2. Dolphins have high IQs
The IQ of dolphins should be the second most intelligent mammals after humans, which is based on the proportion of dolphins' brains relative to their size. Dolphins can recognize each other.
3. Dolphins don’t drink water
Dolphins, like other marine mammals, never drink seawater, so how do they quench their thirst? They replenish the water their bodies lack with water from their food. The salinity of blood in the body of an average marine organism is about one-third that of seawater.
4. Dolphins chew food without teeth
Dolphins can have anywhere from 8 to 250 teeth, which are used to catch their prey, but instead of chewing them, dolphins swallow the food whole. A bottlenose dolphin has 80 to 100 teeth.
5. Killer whales are the largest dolphins in the world
Killer whales, also known as whale killers, are the largest dolphins in the ocean. The largest killer whale ever recorded was 9.75 meters long.
6. When dolphins are born, their tails come out first
Unlike other mammals, dolphins are born tail first. Pregnant dolphin mothers usually move to shallow waters when they are about to give birth, escorted by one or two dolphins (usually a female). Immediately after birth, the mother dolphin helps the little dolphin take its first breath on the water.
Dolphins mainly inhabit the warm tropical waters. Dolphins live freely, but at the same time they are faced with the predicament of survival. Due to the development of globalized fishing and the increase of fishing intensity, it can be said that as long as there are fish, there will be more and more fishing tools and fishing methods.
Although the fishing technology is more environmentally friendly, it still brings great harm to dolphins all over the world. Many people fish for dolphins by mistake. This happens from time to time, which we need to pay attention to.
