Multiple web search results confirm that the Greek island of Ithaca is facing pollution issues related to abandoned fish farms. One source notes that while cleanup efforts have occurred, the general problem persists, and other sources discuss the ongoing issue of abandoned fish farms in Greece.

Two independent web search results confirm that abandoned fish farms, or 'ghost farms,' pollute Greek seas. One source specifically mentions cleanups targeting 'ghost' fish farms in western Greece, and another describes them as environmental hazards.

Multiple web search results indicate that Central Asian leaders are discussing regional environmental priorities and that a new UN water agency could be established at a Regional Ecological Summit, suggesting support for such a proposal.

Multiple web search results reference Kazakhstan's initiative to establish an international water organization within the UN, linking this proposal to events or summits held in Kazakhstan.

Multiple web search results confirm that initiatives are underway to combat ghost fishing gear. While the evidence does not specify Portugal, it confirms the use of tracking and retrieval methods (like 'ghost diving' and 'NETTAG+') to clean up abandoned fishing gear in general.

Multiple web search results report that Iran seized cargo ships in the Strait of Hormuz after reports of vessels being fired upon by Iranian forces, indicating a consistent narrative across different reports.

Multiple web search results contain statements attributed to Sanna Marin where she discusses Europe's vulnerability or the possibility of conflict with Russia, matching the core claim.