DARK SEA : The Ultimate Ecco the Dolphin Resource: Ecco DARK SEA was founded to provide fans with all information and multimedia available in regard to these classic games, including their development.
Ecco the Dolphin - Wikipedia: Very thorough description of the complete Ecco the Dolphin series with a great introduction and information about each of the games.
Ecco the Dolphin Forum at GameTalk: A forum to talk with other ecco fans about anything like help and codes to even descussing problems.
Ecco the Dolphin: Caverns of Hope: An Ecco the Dolphin site covering a lot of topics with an ever-growing amount of information about the games and related stuff. News and Downloads can be found here, as well as a growing community.
Ecco-le-dauphin: A french Ecco the Dolphin site with a fan art work section and forum.
Ecco:DoF guide: Half completed walkthrough for ecco:dof that has the orginal feature of being available both in english and french.
GameFAQs: - Ecco: DoF Forum: Forum where you can talk to other ecco fans, there are also a large number of ecco resources there such a faqs.
Tim Follin's Burial Site: The creator of the music in Ecco the Dolphin: Defender of the Future presents exerpts from the music on his personal website.
yivdesign: A website with many wallpapers designed by an ecco fan.