Fish have a diversity of sexual systems. Pla et al. analyse the transitions in these systems across fish, supporting that simultaneous hermaphroditism cannot evolve directly from separate sexes but re...

In this season, Rossellini takes a look at the seduction techniques of spiders, dolphins, and more — questioning how Noah could possibly have selected just o...

Same-sex sexual behaviour (SSSB) occurs in most animal clades, but published reports are largely concentrated in a few taxa. Thus, there remains a paucity of published reports for most mammalian speci...

There was a time when the Laysan albatross might seem a perfect icon for the virtues of marriage. When naturalists visited the bird’s nesting grounds in the Pacific, they’d find males and females bond...

A recent focus of interest has been on the functional significance of genital licking (fellatio and cunnilingus) in relation to sexual selection in Pteropodid bats. In the present paper, a form of fel...

In every female kobudai... is a male in waiting. Subscribe: http://bit.ly/BBCEarthSub #BluePlanetII Watch more: Planet Earth http://bit.ly/PlanetEarthPlaylist Blue Planet http://bit.ly/BluePlanetPlaylist Planet Earth II http://bit.ly/PlanetEarthIIPlaylist Planet Dinosaur http://bit.ly/PlanetDinoPlaylist Taken From Blue Planet II This bold cinematic experience takes viewers on a magical adventure across the greatest, yet least known, parts of our planet – our oceans. Since Blue Planet aired in 2001, our understanding of life beneath the waves has completely changed. Travelling from the icy polar seas to the vibrant blues of the coral atolls, this series shares these astonishing new discoveries. Meet the strange octopuses lurking in the depths of the Antarctic Ocean. Watch giant trevally fish leap to catch birds in mid-air. And ride on the back of a hammerhead shark as it attacks. Inspiring awe and wonder, Blue Planet II reveals surprising new places, charismatic new characters and extraordinary new behaviours. Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this. Want to share your views with the team? Join our BBC Studios Voice: https://www.bbcstudiosvoice.com/register This is a commercial page from BBC Studios. Service information and feedback: http://bbcworldwide.com/vod-feedback--contact-details.aspx

The Humboldt penguins, Elmer and Lima, expertly watched over an egg that hatched on New Year’s Day