Home to virgin reefs, rare sharks and vast numbers of exotic fish, the Coral Sea is a unique haven of biodiversity off the northeastern coast of Australia. If a proposal by the Australian government goes ahead, the region will also become the world’s largest marine protected area, with restrictions or bans on fishing, mining and marine farming.

    The Coral Sea reserve would cover almost 990,000 square kilometres and stretch as far as 1,100 kilometres from the coast. Unveiled recently by environment minister Tony Burke, the proposal would be the last in a series of proposed marine reserves around Australia’s coast.

    But the scheme is attracting criticism from scientists and conservation groups, who argue that the government hasn’t gone far enough in protecting the Coral Sea, or in other marine reserves in the coastal network.

    Hugh Possingham, director of the Centre of Excellence for Environmental Decisions at the University of Queensland, points out that little more than half of the Coral Sea reserve is proposed as a ‘no take’ area, in which all fishing would be banned. The world’s largest existing marine reserve, established last year by the British government in the Indian Ocean, spans 544,000 km² and is a no-take zone throughout. An alliance of campaigning conservation groups argues that more of the Coral Sea should receive this level of protection.

    “I would like to have seen more protection for coral reefs,” says Terry Hughes, director of the Centre of Excellence for Coral Reef Studies at James Cook University in Queensland. “More than 20 of them would be outside the no-take area and vulnerable to catch-and-release fishing”.

    As Nature went to press, the Australian government had not responded to specific criticisms of the plan. But Robin Beaman, a marine geologist at James Cook University, says that the reserve does “broadly protect the range of habitats” in the sea. “I can testify to the huge effort that government agencies and other organizations have put into trying to understand the ecological values of this vast area,” he says.

    Reserves proposed earlier this year for Australia’s southwestern and northwestern coastal regions have also been criticized for failing to give habitats adequate protection. In August, 173 marine scientists signed an open letter to the government saying they were “greatly concerned” that the proposals for the southwestern region had not been based on the “core science principles” of reserves—the protected regions were not, for instance, representative of all the habitats in the region, they said.

    Critics say that the southwestern reserve offers the greatest protection to the offshore areas where commercial opportunities are fewest and where there is little threat to the environment, a contention also levelled at the Coral Sea plan.

解析：C。根据题干中的critics think of可定位到原文最后一段。该段指出，西南保护区的近海区域得到了最大程度的保护，但这些区域的商机最少，对环境也几乎不会构成威胁，珊瑚海计划也引发了同样的争议。也就是说批评者认为，因为西南保护区并没有太多商业活动，言下之意就是未遭到什么破坏，所以它并不需要最大程度的保护，珊瑚海的某些地区也是如此，C项表述与原文语义一致，故为正确答案。

错项排除：A项中的do more harm than good在原文中没有提及，而且全文都在说珊瑚海计划的前景和面临的问题，没有对珊瑚海计划的利弊作出定论，故A项错误。原文中提到了休·波兴汉和泰利·休斯指出渔业对珊瑚海有害的观点，但这是说渔业可能会影响珊瑚海的保护，不是珊瑚海对渔业有负面影响，B项本末倒置，故排除。原文中罗宾·比曼提到政府和其他组织共同努力，试图理解海洋保护区的生态价值，因此D项与原文不符，故排除。