Ocean engineers solve problems related to the ocean. They may design instruments on submersibles that can collect different types of data as well as the ships that carry cargo around the world. They are not afraid of water for sure! They are also buoyancy experts knowing about how changing the density of an object affects its ability to sink or float.
Just like real engineers, second graders are learning an important skill...to argue. Arguing doesn't always mean yelling and fighting, but it also means to support or defend a choice. As we wrap up our unit on ocean engineering, 2nd graders are arguing about which design to use for a submersible. They had to compare two designs and choose which design would be "best" for the ocean engineer to use to collect data.