What are the disadvantages of sea-based society?

A sea-based society can face several disadvantages, including vulnerability to extreme weather events like storms and rising sea levels, which can threaten infrastructure and livelihoods. Limited access to resources such as arable land may hinder agricultural development and food security. Additionally, reliance on maritime trade can create economic instability if shipping routes are disrupted or if piracy and territorial disputes arise. Social isolation may also occur, making it challenging to maintain cultural connections with inland communities.