of a thousand planet

Seas are shallower than oceans, with depths varying from a few hundred to a few thousand feet. 2. Salinity and Ecosystems. Another difference between oceans and seas is their salinity and the diversity of ecosystems they support.

And it is just the beginning," said Guterres, urging immediate and bold action to cut planet-heating emissions. "The era of global warming has ended; the era of global boiling has arrived."

From a cave filled with millions of cockroaches and evil bats to an island swarming with venomous viper snakes, these are some of the most disturbing and terrifying places on our planet.