(at around 43 mins) When confronted by the twins, Ulysses Klaue says that he is afraid of "Cuttlefish. "Deep sea fish, they make lights, disco lights to hypnotize their prey...." Although cuttlefish do go to depths of 2000ft, they stay mostly in shallow water where they hunt crabs and fish using camouflage to sneak up on their prey before paralyzing them with venom.
(at around 39 mins) When the twins are describing the events that caused their parent's deaths, and their subsequent rescue, they mention that the bomb was only a few feet from themselves, yet people in all other (non USA) countries would relay that information in metric units, aka "only a meter away". Actually, this is incorrect as people in the UK would also refer to this in feet, not all non-US countries use a metric system. However, Eastern Europe (where Sokovia is set) mainly uses metric system.