Our eyes on the ocean, coasts, and Great Lakes
We are an integrated network of people and technology gathering observing data and developing tracking and predictive tools to benefit the economy, the environment, and public safety at home, across the nation, and around the globe.
Access Data
Real-time datasets, downloads, and comprehensive data catalog
Find My Region
Connect with your local
Regional Association and data portal
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Stay updated with Eyes on the Ocean and Ocean Enterprise newsletters
Explore Projects
Discover how IOOS supports ocean and coastal initiatives
What We Do
IOOS delivers the data and information needed to understand our oceans and coasts, improving safety, enhancing the economy, and protecting our environment.
Observe & Monitor the Ocean
We collect real-time data on our oceans and coasts using a variety of technologies and sensors.
Connect Regional Data Networks
The national system is comprised of 11 regional coastal data networks.
Support Decision-Makers
We provide critical data to help communities, industries, and governments make informed choices.
Deliver Open, Real-Time Data
We make ocean and coastal data freely available to the public through user-friendly tools.
Impact in Action
Discover how IOOS data and tools are making a difference in communities across the nation.
Spotlight on Ocean Data
How real-time ocean data is helping coastal communities prepare for extreme weather events.
HAB Dialogues
Bringing together experts to address the growing challenge of harmful algal blooms in our waters.
Eyes on the Storm
How IOOS data supported emergency response during the 2025 hurricane season.
Programs & Initiatives
Discover how IOOS data and tools are making a difference in communities across the nation.
IOOS modeling connects observations, research, operational forecasts, and community collaboration. Explore the testbed, Community of Practice, and models and products inventory.
HF radar measures ocean surface currents in near real time to support search and rescue, spill response, and coastal operations.
Building a long-term, sustained system for observing and sharing marine life data to support ocean conservation, research, and management.
Accelerating innovation and sustainable growth in the blue economy through ocean and coastal data.
Underwater gliders collect subsurface ocean data to support hurricane forecasting, fisheries, ecosystem monitoring, and water quality research.
DMAC meetings, technical webinars, and archived resources for sharing and managing ocean-observing data.
Explore Ocean Data & Tools
IOOS is a national-regional partnership working to provide new tools and forecasts to improve safety, enhance the economy, and protect our environment.
Regional Data Portals
Mobile Apps
Stay Informed
Keep up with the latest news, updates, and developments from IOOS and our partners.
Latest Issue
Eyes on the Ocean
Our quarterly newsletter featuring the latest ocean observing news and updates.
Recent Posts
Jun 10
A biodiversity story for World Ocean Day!
The ocean covers more than 70% of the planet and contains an abundance of ecosystems teeming with life.
Jun 2
May 25
Upcoming Events
Meetings, webinars, and community activities across the U.S. IOOS network in the next 12 months.
The U.S. Integrated Ocean Observing System (IOOS) is a national-regional partnership working to provide new tools and forecasts to improve safety, enhance the economy, and protect our environment. Integrated ocean information is available in near real time, as well as retrospectively.