溺水是严重的公共卫生问题。[1]世界卫生组织数据显示，每年因溺水身亡的人数高达30万人。[1]泳衣的颜色和花纹直接关乎水下可见度，进而影响救援效率。[1]
红色、蓝色、灰色等常见泳衣颜色在水下的穿透力较弱，容易被误认为阴影。[1]这是因为不同波长的光线在水下的穿透能力存在差异。[1]BBC的实验结果表明，红色在水下5米处看起来会变成蓝色，难以辨认。[1]加上水面波动造成的色彩扭曲，这类泳衣在紧急情况下可能被救生员忽视。[1]相比之下，荧光粉、荧光橙、荧光绿等荧光色泳衣具有更高的可见度，能够为救援争取宝贵时间。[1]此外，大面积条纹或花纹也会明显改变泳衣在水下的可见度，因此选择纯色荧光泳衣能更好地保障安全。[1]
针对水下安全问题，欧洲的一家丹麦公司正在研发具有传感器技术的智能泳衣，可实时检测儿童的水下位置，并在遇到危险时自动充气。[1]这类创新产品有望进一步提升水上安全防护水平。[1]
Drowning remains a leading cause of accidental death worldwide, with the World Health Organization reporting approximately 300,000 annual fatalities [1]. Research into water safety has revealed that swimsuit color and design significantly impact visibility underwater, directly affecting rescue response times.
The visibility of swimwear in water is determined by light wavelength penetration at different depths. Red light penetrates water poorly and becomes increasingly difficult to distinguish as depth increases; according to BBC experiments, red objects appear blue when viewed at five meters underwater [1]. Blue, gray, and other dark-colored swimsuits similarly suffer from poor underwater visibility, as they can be mistaken for shadows by lifeguards [1]. Water surface wave motion compounds this problem, further distorting the perceived color of swimmers' clothing [1].
In contrast, fluorescent colors—including fluorescent pink, fluorescent orange, and fluorescent green—demonstrate significantly higher underwater visibility and can provide rescue personnel with critical additional time to locate swimmers in distress [1]. Plain, solid-colored fluorescent swimsuits offer optimal safety benefits, while large-scale stripes or patterned designs substantially reduce underwater visibility [1]. Beyond traditional swimwear, a Danish company supported by the European Space Agency has developed intelligent swimsuits equipped with sensors capable of real-time tracking of a child's underwater location and automatic inflation upon detection of danger [1].
