NPP 2017 Summer

The NPP 2017 Summer dataset is consumed from an external ArcGIS web service via the following URL and ID

http://mapservices.midatlanticocean.org/arcgis/rest/services/Oceanography/NPP/MapServer
ID: 30

OpenLayers

If you are developing in OpenLayers, you will want to use the OpenLayers ArcGIS93Rest class. An example of your solution might look similar to the code below.

layer = new OpenLayers.Layer.ArcGIS93Rest(
    "NPP 2017 Summer",
    "http://mapservices.midatlanticocean.org/arcgis/rest/services/Oceanography/NPP/MapServer/export",
    {
        layers: "show:30",
        transparent: true
    },
    {
        isBaseLayer: false
    }
);
map.addLayer(layer);