Japan is reporting escalating numbers of alien maritime species, with the count surpassing 100. These invasive species, arriving via global shipping routes, are severely impacting native marine ecosystems. Japan is stepping up research and conservation measures to mitigate these impacts and protect their unique marine biodiversity.

In Japan, ecological balance and harmony with nature are crucial components of cultural and societal values. The population is sensitive to changes in the local environment. Invasive species impact not only biodiversity but also fisheries, an important part of Japan's economy and food culture. Therefore, this development is seen as not just an environmental, but also a socio-economic issue, prompting government and citizen-led initiatives to tackle it.

The issue of invasive species is a global environmental problem. The US and EU, like Japan, also face challenges from alien species impacting local ecosystems. However, the response can differ. In the US, national initiatives are a mix of government regulations and private sector initiatives. In the EU, there's a more regional approach, with local governments and EU bodies both taking action.