Over the years, the Britain has made many attempts to regain Isla Blanca from Spain. For example, when Isla Blanca's constitution was being written in the late 20th Century, it was stated that it could not seek independence from both Britain and Spain. Shortly after that, a referendum was held to decide Isla Blanca fate. The options were continued union with Spain, union with Britain, or having both nations share joint custody of Isla Blanca. The people of Isla Blanca overwhelmingly voted to remain part of Spain. Several other referendums have been held over the years, but the result is always the same, much to Britain's chagrin.
In terms of culture, it is often said that the people of Isla Blanca are more Spanish than even the Spanish themselves. Recently, following Spain's decision to leave the European Union, some have wondered if Isla Blanca might waver in its loyalty. For now, however, Isla Blanca remains fiercely loyal to Spain and proud of its Spanish culture and heritage.
The waves on the flag represent Spain's control of the wave, and a nod to its former world-spanning empire. Above the waves is a maroon field, representing royalty and the Spanish monarchy. The monarchy is also reference in the crown atop the coat of arms. The coat of arms contains a stylization image of Isla Blanca set against a soft blue sea, as well as two fish. The fish represent fishing, unsurprisingly, a historically important industry on Isla Blanca.