Microplastics in shoreline sediments were investigated from Da Nang beach for the first time. Sediment samples at the two depth strata (0–5 cm and 5–10 cm) at eight sites along the entire coast were collected for identifying the characteristics of microplastics, including their concentration, size, shape, color, and nature. The synthetic fiber was the predominant type of microplastics, accounting for 99.2% of the total items. Blue (59.9%) and white (22.9%) were the most common colors of the fibers. Synthetic fibers showed a homogenous distribution at all sampling sites with a mean concentration of 9238 ± 2097 items kg⁻¹ d.w. Meanwhile, the fibers tended to concentrate much more at the surface stratum than the deeper stratum. A large number of synthetic fibers (81.9%) were in the size range of 300–2600 μm, which might pose a threat to marine biota and human health.

首次从岘港海滩调查了海岸线沉积物中的微塑性。收集了沿整个海岸的八个位置的两个深度层（0-5 cm和5-10 cm）的沉积物样本，以确定微塑料的特征，包括其浓度，大小，形状，颜色和性质。合成纤维是微塑料的主要类型，占总数的99.2％。蓝色（59.9％）和白色（22.9％）是纤维最常见的颜色。合成纤维在所有采样点均显示均匀分布，平均浓度为9238±2097千克kg ^-1dw同时，纤维比深层更倾向于集中在表层。大量合成纤维（81.9％）的尺寸范围为300–2600μm，这可能对海洋生物群和人类健康构成威胁。