The Expo also received positive reaction for addressing global issues like climate change and the protection of the ocean through story-telling events.

The theme, "The Living Ocean and Coast", was supplemented by a song, "Stories told by the sea", and represented by two mascots Yeony and Suny.

The sub theme argued that individuals, businesses, countries and the global community must realize that marine resources are limited and should not be subject to careless use, but that they are the fundamentals for the sound development of our future society, and people and ecosystems must be considered on the same level.

Countries are becoming more competitive in marine-related industries and are developing new technologies to address issues related to resources and the changing environment.

Creative Maritime Activities aimed to demonstrate the relationship between the oceans and humankind through culture and art and promote the new ideals of the seatizen and seavilization.

A mix of play and experience (edutainment) aimed to trigger the imagination and curiosity of attendees towards an unknown world and to inspire children to learn to love and appreciate the oceans.

The second hall 2 Sea of Hope portrayed Korea's potential future role in maritime era[7] and included the world's largest dome screen.

[32] Human life not only embraces space, time, culture, science, technology, and occidental and oriental ideas, but also the ecosystems and humankind.

Two cement storage towers were transformed into the tallest structure of the Expo site and its observation deck offers panoramic views of the event grounds.

It includes the acoustical signet of the Expo: The Vox Maris, a pipe organ that opened and closed every single Expo-day, it was also regularly used in concert play.

The Sky Tower was elected as one of the top four major attractions of Yeosu Expo.The Expo Town was originally developed as an exemplary model of an ecologically-sound coastal city, for use as a testing ground for "green" home projects.

The organizers modified this section to display ocean-themed "timeshares" and premium dwelling places for the future beyond the Expo.

Yeosu Declaration is to demand the international response to the situation such as pollution and overfishing, that preservation for the ocean and sustainable development is threatened.

[36] Other than pavilions and exhibition buildings, Yeosu Expo held various indoor and outdoor performances to further entertain its visitors.