Do animals have siblings, aunties, or cousins? Can they survive without any family at all? Female gazelles, like this ...

Opalescent baby squid have "midwives" to bring them into the world. Squid eggs wait in gelatinous orbs to hatch. Capitella ...

Secrets of the Penguins cinematographer, Bertie Gregory, shares the memorable moment he filmed baby penguins leaping from a 50-foot cliff with PEOPLE.

This story appears in the May 2019 issue of National Geographic magazine ... Yet fish populations around the world, and the animals that eat them, depend on just how many larval fish make it ...