All the animals studied in the ship's main lab don't just appear there. If you were a member of the science party on this research cruise, you would likely leave the large ship in a small boat and scuba dive to collect sample animals in jars.

In this panorama a diver checks and adjusts his scuba gear on deck, while-- if you turn the panorama to look in the opposite direction-- the small inflatable boat can be seen being held by the crane at the rail while equipment for a collecting dive is loaded into it.