Introduction: The beginning of all questions was the sea.

Part 1: The Sea, Home to All Living Things
Chapter 1: Diving into the Origin of Life
Chapter 2: A profession that studies the world called the sea
Chapter 3: The Sea, the Cradle of Life
Chapter 4 Life Beyond Earth: Clues in the Deep Sea
Chapter 5: Competition, Development, and the Science of Coexistence

Part 2: Changing Fish, Shaking Ecosystems
Chapter 1 Fish or Fish?
Chapter 2: All About Fish Survival Strategies
Chapter 3: The Invisible Force That Moves the Sea
Chapter 4: Changing Seas, Moving Fish
Chapter 5: The Science of Protecting Fish

Part 3: Prescription of the Sea
Chapter 1: Pharmacy in the Waves
Chapter 2 Why is the sea poisonous?
Chapter 3: A Far Sea to Become Medicine
Chapter 4: New Materials and Beauty Gifted by the Sea
Chapter 5: What Gets Caught in a Scientist's Net?

Part 4: Warming Oceans, Endangered Creatures
Chapter 1: The Sea as a Climate Regulator
Chapter 2 Marine Heat Waves, Sea Heatwaves
Chapter 3: The Sea-Shaking Boundary
Chapter 4: Records of the Sea, Predictions of the Future
Chapter 5: When Science Becomes Our Common Language

Going out: The mind that holds on to the question until the end
Photo source

From the origin of life to the development of new drugs
If you know the sea, you can see the Earth.

There has been a lot of interest in space exploration recently.
But there is a place as colorful and interesting as space.
It is a vast and deep ocean that covers 70% of the Earth's surface.
The ocean is where life first emerged, and holds the secrets of the origin of life and the possibility of extraterrestrial life.
Additionally, new drugs such as anti-inflammatory analgesics and anticancer drugs that we are familiar with have been developed using marine organisms, and marine microorganisms are attracting attention as a new method for developing eco-friendly energy.
Although the ocean is a treasure trove of knowledge and resources, only five countries in the world have manned submersibles capable of exploring the ocean to a depth of 6,000 meters.
There are scientists who have gone down to the deep sea, which is difficult and challenging to explore.
This is Dr. Woongseo Kim, who has been researching the ocean at the Korea Institute of Ocean Science and Technology for 30 years and even served as its director.
In Part 1, “The Sea, the Home of All Living Things,” Dr. Kim Woong-seo vividly tells the story of becoming the first Korean to explore the 5,000-meter deep Pacific Ocean in a submersible.
The deep sea is not simply the depths of the ocean, but a wondrous world of new life and resources, of which humanity knows only 5%.
For this reason, Korea is also actively exploring deep seas such as the Pacific Ocean using the unmanned remotely controlled submersible, Haemi-rae.
Part 1 covers the entire spectrum of marine science, including the importance of deep-sea exploration, what marine science is, what marine scientists study, and why we should study the ocean.

The sea awaits those who harbor questions.
For young people who wish to pursue a career in science and engineering
A vivid story that will inspire new dreams

Humans have been eating, recording, and trying to understand fish since time immemorial.
But why are some creatures called "fish" and others "raw fish"? In Part 2, "Changing Fish, Shaken Ecosystems," marine biologist Dr. Park Ju-myeon shares fascinating stories about fish resources and ecology, starting with the difference between "fish" and "raw fish" and exploring the diverse survival strategies of marine life.
You'll learn how marine life has evolved to survive and how closely connected they are within food chains and food webs, rediscovering the wonders of the ocean's ecosystem.
In Part 3, “Prescription of the Sea,” Dr. Lee Yeon-ju explains the development of new drugs and materials using newly emerging marine natural products.
The ocean, which still remains an 'unknown territory,' is attracting attention as a storehouse of resources for finding ingredients for new drug development.
Scientists are developing treatments from marine life in ways no one has ever imagined, such as making painkillers from pufferfish venom and anticancer drugs from the defense substances of sponges.
The value of marine life is increasing day by day, as it can be used not only as new drugs but also as new materials such as cosmetics and antifouling agents (substances that prevent biological adhesion).
It is not easy to go out into the rough seas and conduct field research.
There are countless instances where you have to ride on a boat that rocks violently, and you are exposed to heavy rain and cold wind.
Dr. Park Ju-myeon tells the story of catching fish by casting nets with fishermen on a fishing boat, and Dr. Lee Yeon-ju tells the story of diving into the Pacific Ocean's Micronesian sea and finding sponges.
Marine scientists, driven by a desire to understand the ocean even in challenging circumstances, venture beyond the waves toward a world yet unseen.
By observing scientists diligently researching in the marine science field, young people will be able to discover career paths they never knew existed and cultivate new dreams.

Strengthening integrated science and convergence science education
Marine science, a convergent discipline that envisions the future of humanity

According to the revised 2022 curriculum, a new subject, 'Climate Change and Environmental Ecology', has been added to the high school science electives.
A new subject was created to teach the severity of the climate crisis and the importance of protecting ecosystems.
The ocean, which stores most of the Earth's heat and carbon, is a key target for addressing the climate crisis.
In Part 4, “The Warming Ocean, Life in Crisis,” Dr. Chan-Joo Jang emphasizes the role the ocean plays in the Earth’s climate and discusses “marine heat waves,” an abnormally high temperature phenomenon that has recently increased rapidly.
Marine heat waves aren't just a problem for fish in the ocean.
Heated oceans cause abnormal weather events such as typhoons and heavy rains, as well as rising sea levels, shaking the Earth's climate system and changing our living spaces.
The warning that the future ocean landscape will unfold differently depending on the choices we make now is especially urgent for us who live in a place surrounded by the sea on three sides.
In accordance with the reform of the college entrance system, starting with the 2028 College Scholastic Ability Test (CSAT), elective subjects in the science exploration area will be abolished and only one subject, 'Integrated Science', will be taken.
The importance of integrated science education encompassing physics, chemistry, earth science, and life science is growing.
Marine science is a representative example of convergent science, as it brings together various fields such as physics, chemistry, life science, and engineering within the single field of the ocean.
It is also a 'strategic science' closely linked to security, diplomacy, and the economy, and a 'megascience' that requires national resources and infrastructure.
In this important field of marine science, Korean scientists are discovering new possibilities through persistent research and international cooperation.
By observing marine scientists exploring the origins of life and envisioning the future of Earth and humanity, you will be able to realize the importance and appeal of marine science as a discipline.