Borealis Prime

致密气生孢子体，即飘浮苔藓，由充满氦气的微观囊泡聚集而成，在极光主星（Borealis Prime）高达 2.4g 的压迫性大气中形成漂浮的翠绿色云团。这些气囊生物在上层急流中悬浮，通过光合作用吸收深层紫外线辐射，构成一层半透明且不断变幻的覆盖层，将行星包裹在海拔二十公里处。 作为空中生物圈的主要生产者，飘浮苔藓被滤食性的天空鲸和巨型滑翔者所摄食，它们依赖其富含营养的孢子生存。尽管结构脆弱，但这些漂浮垫状体的集体质量却稳定了局部天气模式，创造出一个脆弱的漂浮生态系统；唯有在高重力风将其托举于有毒地表雾霭之上的区域，该生态方能存续。

Compressivora vorax, colloquially known as Pressure-Leeches, are diminutive yet hyper-dense organisms endemic to Borealis Prime's crushing gravity wells. Measuring merely three centimeters, their calcified carapaces allow them to cling tenaciously to the massive tentacles of native leviathans without being crushed. They possess specialized adhesive pads capable of withstanding immense atmospheric pressure while filtering nutrients from decaying tissue at attachment sites. These obligate parasites function as essential scavengers, rapidly consuming necrotic flesh and preventing lethal infections on their hosts. Observed in swarms during the planet's violent storm cycles, they detach only when a host molts or dies, dispersing to colonize fresh biomass. Their rapid reproduction ensures a symbiotic balance where the leviathan gains hygiene while the leech secures a stable, high-pressure feeding ground.

雷织者（Fulminaria arcus）通过模仿飘浮的孢子，在博瑞利斯·普莱姆星球的极端重力环境中繁衍生息。其凝胶状、半透明的躯体几乎无重，直至锁定猎物：天空水母巨大的浮力囊。与通常撕咬猎物的掠食者不同，这种敏捷的猎手悄然上升，利用静电纤毛附着于宿主体表膜，随后伸出针状吻部。 一旦固定，Fulminaria arcus 便会刺破浮力囊的高压核心，引发急速减压，使猎物坠入低层大气；在此处，雷织者以释放出的气体和体液为食。这一特化的策略使一种软体生物得以主宰高空食物网，将天空水母赖以生存的关键机制转化为其致命的弱点。