Pneumatophores are the aerial root systems that allow mangroves to get oxygen as the mud they live in is anaerobic. Great crested grebes A Yellow Kapok flower against

A Yellow Kapok flower against a blue sky

Stippled sand dunes after heavy rains saturated the desert at night

Sunset touches the summit of a mountain overlooking an alpine lake

A wading White-necked Heron elegantly displaying breeding plumage

A wind-rippled sand dune in the Little Sahara Desert

Pneumatophores are the aerial root systems that allow mangroves to get oxygen as the mud they live in is anaerobic. Great crested grebes A Yellow Kapok flower againstPneumatophores are the aerial root systems that allow mangroves to get oxygen as the mud they live in is anaerobic. Porosus Creek, Hunter River, Kimberley Coast, Western Australia, Australia.