Further exploration reveals a bay where all of Avery's men, including Toby and Rory, are in medical care, along with the TARDIS; they were taken by the siren, the black spot being a tissue sample for reference.
Further exploration reveals a bay where all of Avery's men are in medical care. This is including Toby and Rory. This is along with the TARDIS. They were taken by the siren. They was being a tissue sample for reference. The siren was the black spot.