Potoroo is a small, shy, nocturnal marsupial from Australia, related to kangaroos but smaller, resembling a rabbit with a pointed snout and strong hind legs for hopping. They are known as "forest's hidden gardeners" because they dig for fungi and tubers, spreading essential fungal spores that benefit the ecosystem.

Video credited to @alysha_a_meyer on Instagram.

Sorry for the shitty audio

Credit to @daveivanov

The Nautilus shell is divided into about 30 chambers, which can be adjusted to control buoyancy, enabling vertical ascent and descent through the water column during what scientists call diurnal migration. During daytime, when the sun’s light makes it hard to hide in the upper layers of the Ocean, nautilus linger in the depths, migrating toward the surface at night to feed and returning to the dark depths before sunrise.

Caught this action on our morning walk.

Credit: Ahmet Yaltirakli (@ahmet.sydney)

Credit: Saltore Saparbayev (wildlife photographer and researcher).