After a brief discussion today about whether it is called the Port of Long Beach or the Port of Los Angeles, it was determined that they are in fact two separate container ports in Southern California. The two ports are adjacent and are the two busiest container ports in the United States.
The city boundary of Los Angeles extends south through a sliver of gridlocked 110 interstate to the Los Angeles port and the area known as San Pedro. Immediately to the east is Long Beach and the Port of Long Beach, which is, as discussed earlier, an entirely separate port.
This sliver of land connecting the city with the port is similar to the Denver International Airport:
The Denver International Airport is the largest airport in North America by land and the second largest in the world. It is also a port.