Dolphins have always fascinated humans with their intelligence and grace. From ancient myths to modern conservation efforts, these marine mammals hold a special place in our hearts.

This article explores the remarkable world of dolphins, their intelligence, social behavior, relationship with humans, and the challenges they face today.

Intelligence Beyond Imagination

Dolphins are known for their extraordinary intelligence. Research shows that the brain-to-body ratio of adult dolphins is close to that of humans. Their complex brain cortex allows them to process information efficiently. For example, some dolphins use sponges to protect their beaks while hunting, a behavior that requires both individual intelligence and intergenerational knowledge transfer.

In Shark Bay, Australia, different dolphin groups have developed unique hunting techniques, such as using tail slaps to create bubble walls to trap fish. These skills are passed down through imitation and learning within the community, showcasing a highly developed social culture.

Sound-Based Civilization

The world of dolphins is filled with sound. They use echolocation to navigate and hunt in the dark ocean depths. More fascinatingly, dolphins have a complex system of communication. Each dolphin has a unique "signature whistle," similar to a human name. When two dolphins meet, they repeat each other's "names" to show friendliness.

Studies have shown that dolphins use specific sound frequencies to coordinate actions during group hunting, as if they are mapping out strategies with sound. Recent research also suggests that dolphin "conversations" have a rudimentary grammatical structure.

They can convey information and emotions through different sound frequencies and durations. For instance, when a young dolphin is injured, group members emit low-frequency soothing sounds and take turns supporting the calf to help it breathe. This emotional communication highlights the warmth of dolphin social relationships.

Millennium Bond with Humans

The bond between humans and dolphins dates back centuries. In ancient Greece, Aristotle documented dolphins rescuing drowning people in his "History of Animals."

Modern science has confirmed that dolphins have a tendency to help other species. In 2013, a group of dolphins in New Zealand formed a protective circle around a surfer who was surrounded by tiger sharks, fending off the predators until help arrived. Biologists believe this altruistic behavior stems from dolphins' highly developed empathy.

In culture, dolphins have long been symbols of hope. In the Moche civilization of Peru, dolphins were depicted as messengers between humans and sea gods. In modern films like "Dolphin Tale" and "The Big Blue," they represent freedom and spirituality. Today, over 30 countries have designated dolphins as symbolic species for marine conservation, a rare cross-species influence in the animal kingdom.

Survival Crisis and Reflection

Despite their popularity, dolphins face increasing threats. The United Nations Environment Programme reports that approximately 100,000 dolphins die annually from plastic ingestion, sonar interference, or accidental capture in fishing nets.

In Taiji, Japan, traditional dolphin drives continue the dolphin performance industry separates many calves from their families. These practices not only endanger dolphin populations but also disrupt marine ecological balance. Fortunately, conservation efforts are underway globally.

The International Whaling Commission has also banned commercial hunting of small cetaceans. Technology is providing new solutions—Australian scientists have developed underwater acoustic monitoring networks to track dolphin migration routes, and environmental organizations have launched "virtual adoption" programs to allow the public to observe the daily lives of wild bottlenose dolphins through the cloud.

Dolphins are a mirror reflecting our relationship with nature. Their intelligence and social behavior remind us of the wonders of life on Earth. As we marvel at their abilities, we must also take responsibility for their protection. Let us treat the ocean with respect and ensure the survival of these remarkable creatures. The next time you see a dolphin leaping out of the water, remember that it is a message from the ocean, urging us to cherish and protect our planet.