Early explorers told tales of lakes that smoked, as if on fire. 早期探险家看到这种湖面上“冒烟”的情景 还以为是湖底着了火 But these spiralling columns hundreds if metres high 这些高达数百米的螺旋型“烟”柱 are mating flies. 其实是正在交配的幽蚊 Once the flies have mated, 幽蚊完成交配之后 they will al...
But these spiralling columns hundreds if metres high 这些高达数百米的螺旋型“烟”柱 are mating flies. 其实是正在交配的幽蚊 Once the flies have mated, 幽蚊完成交配之后 they will all drop to the water surface, 便会一起落到水面 release their eggs and die. 产下卵 然后死去 Malawi may look lik...
Here, in this dead zone the larvae of lake fly midges hide out away from predators. 这个死亡地带成了 幽蚊幼虫躲避天敌的庇护所 In the rainy season they balloon up to the surface 每到雨季 它们便充气浮上水面 and undergo a magical transformation. 然后经历一场不可思议的变化 At dawn the firs...
In the rainy season they balloon up to the surface 每到雨季 它们便充气浮上水面 and undergo a magical transformation. 然后经历一场不可思议的变化 At dawn the first adult midges start to break out. 黎明时分 第一只成蚊破蛹而出 Soon, millions upon millions of newly hatched lake flies...
and undergo a magical transformation. 然后经历一场不可思议的变化 At dawn the first adult midges start to break out. 黎明时分 第一只成蚊破蛹而出 Soon, millions upon millions of newly hatched lake flies are taking to the wing. 不久 成百上千万只新羽化的幽蚊 全都扇动着翅膀飞到空中 Early explore...
At dawn the first adult midges start to break out. 黎明时分 第一只成蚊破蛹而出 Soon, millions upon millions of newly hatched lake flies are taking to the wing. 不久 成百上千万只新羽化的幽蚊 全都扇动着翅膀飞到空中 Early explorers told tales of lakes that smoked, as if on fire. 早...
by detecting distortions in the electric field they create around their bodies. 它们在身体周围形成电场 并感知其变化 Any cichlid that trenches out will be snapped up. 一旦慈鲷切入电场 立刻就会成为捕食的对象 The floor of Lake Malawi drops 700 metres into an abyss. 马拉维湖底是一个深达700...
Any cichlid that trenches out will be snapped up. 一旦慈鲷切入电场 立刻就会成为捕食的对象 The floor of Lake Malawi drops 700 metres into an abyss. 马拉维湖底是一个深达700多米的深渊 Here, in this dead zone the larvae of lake fly midges hide out away from predators. 这个死亡地带成了 ...
The floor of Lake Malawi drops 700 metres into an abyss. 马拉维湖底是一个深达700多米的深渊 Here, in this dead zone the larvae of lake fly midges hide out away from predators. 这个死亡地带成了 幽蚊幼虫躲避天敌的庇护所 In the rainy season they balloon up to the surface 每到雨季 它们...
This lake can be a dangerous place. 马拉维湖也是个危机四伏的地方 After dark, predatory dolphin fish emerge from their daytime lairs among the rocks. 到了晚上 掠食性的长颌鱼纷纷 游出它们白天潜伏的石缝 Like packs of sharks, they're on the prowl for sleeping cichlids. 它们像是一群鲨鱼...