ROV diving continued today east of Thera on the large blocks on the seafloor. We explored at least 6 large blocks that were up to 200 meters in length. Additional samples were taken but we still had problems getting samples from the harder parts of the blocks. Many of the blocks are covered with a dark crust that turned out to be soft brown sediment cemented together on the surface by some hard material. Sometimes the crust had fallen away from the surface of the blocks and soft pyroclastic sediment was exposed in the interior.

Figure caption: 3D views of the large blocks on the seafloor east of Thera