Marine dead zones form when nitrogen and phosphorus pollution concentrates in near-coast waters through a process called eutrophication.

氮，磷污染通过被称为富营养化的这个过程，在近海岸水域集中泛滥，从而形成海洋死区。

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Jellyfish can still emit toxins when dead or broken apart, said Renee Zobel, a Marine biologist with the New Hampshire fish and Game Department.

来自新新罕布什尔州渔业部的海洋生物学家瑞妮·祖贝儿说，水母在死后或受伤后依然可以释放有毒物质。

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Ian MacDonald, a marine biologist at Florida State University, says the 160 or so dead dolphins are the tip of the biological iceberg.

弗洛里达州立大学的海洋生物学家Ian MacDonald说，约160头海豚的死亡只是生物危机的冰山一角。

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Washington (CNN) -- A shooting that prompted a lockdown for hours at a Marine base in Virginia ended with three dead early Friday, including the gunman, authorities said.

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The other parasite, Sarcocystis neurona, was a surprising find in the tissues of dead marine mammals, researchers reported Tuesday in the open-access journal PLoS Neglected Tropical Diseases.

MSN: 2 lethal parasites team up to kill dolphins, seals

Mr Hammond opened the session by paying tribute to UK service personnel killed in Afghanistan, including a soldier and Royal Marine who have been shot dead by an Afghan army soldier in Helmand.

BBC: MP: Arms sales to Bahrain 'shaming'