[8] Berawa is also a word of Indonesian origin, meaning low ground (usually in coastal areas) and flooded with water, usually with lots of aquatic plants, an apt description of what Seria had been in the past.

As well as open sea, it contains tidal mudflats and sandflats, mangroves and beach forest which support populations of various birds, including Bornean crestless firebacks, grey imperial pigeons, short-toed coucals, lesser adjutants, Chinese egrets, Wallace's hawk-eagles, Malay blue-banded kingfishers, and straw-headed bulbuls.

[17][18] On 28 April 1945, Seria was attacked by the United States Navy which targeted places in the Asia-Pacific occupied by the Japanese forces.

[19] The town was liberated by the Australian forces on 29 June 1945; by the time they arrived in Seria, the oil field was heavily burned and only in November in that year that the production was restored.

[21] During the 1962 Brunei revolt, rebels of the TKNU managed to gain control of Seria,[22][23] but was soon liberated by the 1/2nd Battalion Gurkha Rifles Regiment and Queen's Own Highlanders on 11 December 1962.

[7] The Brunei Shell Petroleum (BSP) Company Limited is headquartered in Panaga and has various facilities related to the oil and gas industry in Seria.

[37] The open-air oil water treatment facility at the Sungai Bera Holding Basin (SBHB) has since been discontinued due to environmental reasons.

[46] The route and remnants of a 8 miles (13 km) wooden railway from Seria to Badas that was built by the British Malayan Oil Company (now Brunei Shell Petroleum) before the war to service the water supply to Seria from the Badas pumping station on the Sungai Belait are still visible.

[47][48] BMP staff hid essential components of the railway from the Japanese during World War II who therefore were unable to restore it so it fell into disrepair.

When the liberation forces of the Australian 9th Division arrived,[49] these components miraculously re-appeared and the railway was quickly restored to action to carry two 25-pounder guns and ammunition to Badas, to harry a Japanese contingent that was still in the area.

[51] There is a privately owned airfield in Anduki that caters mainly for flights to offshore Brunei Shell Facilities.

[63] This has since been demolished and replaced by the Tenaga Suria Brunei (TSB) solar farm, with a generation capacity of 1.2 megawatts (1,600 hp).

[72] It was reopened in 2019, after plans made to tear down and rebuild the historic shop houses, which were destroyed by fire in September 2015.

Due to declining numbers, it was closed down in late 2006 and its student body was merged with the formerly all-girls Catholic school, St. Angela's.

[81] The British Forces Brunei headquarters was established in Seria, in 1963 by the request of then Sultan Omar Ali Saifuddien III.

Additionally, there are a few Garrison Troops who assist the battalion in completing its job as well as the British Army Jungle Warfare Training School (TTB).

All Garrison personnel and their eligible dependents have access to a primary care facility through the Medical Reception Station (MRS).