AML CTDs have the ability to integrate data from remote environmental sensors, including Chlorophyll A. AML places the Chlorophyll A sensor in a separate pressure housing and connects the sensor to an AML CTD instrument by way of underwater connector and cable. Chlorophyll A data is logged with the CTD data and is time stamped accordingly. The AML CTD powers the chlorophyll A sensor. The AML solution always includes the sensor and its pressure housing, a mounting bracket, and an interconnect cable.