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This is the first ocean deployment of two new high precision instruments designed to monitor the Earth’s signals from the seafloor. This housing contains the tilt meter and Nano bottom pressure recorder and the associated electronics and cabling use for power and communications. The instruments were deployed on the seafloor by remoted operated vehicle as part of the Mars seafloor observatory test bed located at depth of 3,000 feet in Monterey bay, and connected to the coast of California 32 miles away by power and communication cables. Tilt meters detect movements in the seafloor caused by volcanic activity associated with magmatic intrusion and of submarine volcanoes. The new high-precision tilt meter inside this housing can detect a tilt or rise equivalent to the height of a penny over a distance of 5 miles. Nano bottom pressure recorders monitor oceanographic and earthquake generated signals so precisely they can detect a change in sea level as small as the thickness of a piece of paper. The new Nano recorder can distinguish between oceanographic signals and seismic signals from earthquakes potentially improving tsunami forecasts. In this first test deployment in the ocean, they have already detected the ground motion from several large earthquakes as far from the Mars site as Chile and the Mariana Trench. In the future, the instruments will be part of a global network of cable seafloor observatories. Because of their precision, these two new instruments are already detecting signals which could never be measured before, revealing new oceanographic biological and seismic secrets of our earth.