Oceans cover 71% of the Earth’s surface, but despite their immense size and impact on the planet, we know very little about them. While many of us might associate the sea with relaxing holidays on tropical beaches, the ocean is nothing but cold, dark and monotonous for most of the creatures that inhabit it. Oceans cover 71% of the Earth’s surface, but despite their immense size and impact on the planet, we know very little about them. While many of us might associate the sea with relaxing holidays on tropical beaches, the ocean is nothing but cold, dark and monotonous for most of the creatures that inhabit it. Plants & Animals Ecology Phys.org – latest science and technology news stories