# MARCO Ocean Data — 5,000+ Maps of Ocean Resources > Mobile GIS app for exploring and visualizing ocean resource maps and data layers. (iPhone/iPad app by Monmouth University.) - Source: https://appshunter.io/ios/app/marco-ocean-data/id6737808561 (this page in markdown: same URL + `.md`) - Developer: [Monmouth University](https://appshunter.io/developer/508508233) - Category: Reference, Education - Price: Free - Rating: 5.00/5 from 8 App Store ratings - Age rating: 4+ - Requires: iOS 26.0 · 114 MB - Languages: American English - Released: 2024-11-07 - Data updated: 2026-08-03 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/marco-ocean-data/id6737808561/reviews.md ## What is MARCO Ocean Data? This app serves as a mobile friendly version of the Mid-Atlantic Ocean Data Portal’s “Marine Planner” GIS web app, developed by the Mid-Atlantic Regional Council on the Ocean (MARCO). Visit www.portal.midatlanticocean.org to use the web app. Map: The map displays all of your active layers. You can view each layer’s description, legend, and more. You can also deactivate, reorder, change the opacity of, and toggle the visibility of each layer while viewing the map and see your changes instantly. Enabling the tap function on the map lets you view information about layers’ features at the tapped location. Each informational popup is draggable; Customize the screen to your liking! Layers: Explore thousands of layers by browsing various themes or performing a search, either across all layers or within your selected theme. Tap a layer to preview it individually and view its information. You can also activate a layer to add it to your Map or add it to your favorites to access it later. Some layers have specific functionality: A slider layer may let you change a layer’s appearance based on the month or year, for example. Preview: Select a layer in the Layers tab to view a map preview of that layer. In this focused view, you can view an individual layer’s source, description, metadata, and tap to view feature information, just like in the main map. You can also choose to view it alongside your other layers by activating it or add it to your favorites. Actives and Favorites: View your active and favorite layers on their own screen through the Preferences page. You can also choose to bookmark these pages in your Preferences to add them to your navigation bar for easier access. These pages provide an easy way to reorder, preview, favorite/unfavorite, and activate/deactivate your saved layers. Contact: For questions, comments, or to report an issue, please email portal@midatlanticocean.org. ## Key features - Interactive map with active layers - Layer customization (opacity, visibility, order) - Tap to view feature information - Search and browse thousands of data layers - Layer preview with source and metadata - Save favorite layers - Bookmark navigation bar pages ## Frequently asked questions about MARCO Ocean Data ### What is MARCO Ocean Maps? MARCO Ocean Maps is a mobile application that provides access to over 5,000 maps of ocean resources, serving as a mobile-friendly version of the Mid-Atlantic Ocean Data Portal’s Marine Planner GIS web app. ### Is MARCO Ocean Maps free to use? Yes, MARCO Ocean Maps is completely free to download and use. It is available on iOS devices and does not require any payment or subscription. ### What kind of data can I find in MARCO Ocean Maps? The app offers a wide range of ocean resource data, including layers related to marine ecosystems, human activities, and environmental conditions. Users can explore these layers by theme or search. ### Can I customize the map view in MARCO Ocean Maps? Yes, you can customize the map by activating, deactivating, reordering, changing the opacity, and toggling the visibility of layers. The informational popups are also draggable for a personalized experience. ### How often is MARCO Ocean Maps updated? The app was last updated on May 26, 2026, with version iOS App Version 2.0.1. While the last update date is in the future, indicating potential for ongoing development, users can expect regular improvements and data additions. ### What devices are supported by MARCO Ocean Maps? MARCO Ocean Maps is currently supported on iPhone devices. It is designed for iOS mobile use. ### How can I report an issue or provide feedback for MARCO Ocean Maps? For questions, comments, or to report an issue, you can email the developers directly at portal@midatlanticocean.org. ### Does MARCO Ocean Maps have ads? No, MARCO Ocean Maps does not contain advertisements. It is a free application designed to provide users with an uninterrupted experience of ocean data. ## Version history (last 5 releases) ### 2.5 — 2026-07-29 New Feature - Add tagging to record multi-modal data consisting of notes, photos, videos, and audio to a user specified location. The collected data is saved locally on user's device for viewing at a later time. ### 2.0.8 — 2026-07-02 Bug fixes ### 2.0.7 — 2026-06-30 Minor update to make better use of screen width when presenting slider layer controls. ### App Version 2.0.6 — 2026-06-29 Improved User Interface for slider layer selection. Updated ArcGIS map access ### iOS App Version 2.0.2 — 2026-06-19 Support for Marco Maps with slider selectable layers ## Apps similar to MARCO Ocean Data | App | Rating | Price | Category | | --- | --- | --- | --- | | [AGU Events](https://appshunter.io/ios/app/agu-events/id1303525553) | 4.3 (346) | Free | Reference | | [Recycle Coach](https://appshunter.io/ios/app/recycle-coach/id1071714967) | 4.8 (24,829) | Free | Reference | | [Monmouth County Votes](https://appshunter.io/ios/app/monmouth-county-votes/id1281739449) | 3.5 (10) | Free | Reference | | [Fishing Knots FishPlanet](https://appshunter.io/ios/app/fishing-knots-fishplanet/id681286803) | 4.7 (19,606) | Free | Reference | ## More apps by Monmouth University - [Experience Monmouth](https://appshunter.io/ios/app/experience-monmouth/id1524364219) - [Hawk Hub](https://appshunter.io/ios/app/hawk-hub/id6751846844) All apps by Monmouth University: https://appshunter.io/developer/508508233 ## Related topics [marco ocean maps](https://appshunter.io/ios/topics/marco-ocean-maps) · [monmouth university](https://appshunter.io/ios/topics/monmouth-university) · [environmental data resources](https://appshunter.io/ios/topics/environmental-data-resources) · [marco polo ocean](https://appshunter.io/ios/topics/marco-polo-ocean) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-03.*