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octopus

Question

How many hearts does an octopus have?

An octopus has three hearts: Two peripheral ones in its gills and a further central heart that serves its organs and muscles.

What causes waves in the ocean?

Question

What causes waves in the ocean?

The oceans are changing - here’s how to help researchers monitor them

Life

The oceans are changing - here’s how to help researchers monitor them

Regulars

How deep is the Mariana trench?

Question

How deep is the Mariana trench?

A submersible soft robot survived the pressure in the Mariana trench

Technology

A submersible soft robot survived the pressure in the Mariana trench

News

Playing with Sharks

Life

Playing With Sharks review: The amazing woman who helped film Jaws

Culture

shark

Environment

Sharks at unprecedented risk of extinction after 71 per cent decline

News

Over 1.5 million flamingos gather on the soda flats of Lake Natron in northern Tanzania

Life

A Perfect Planet review: Attenborough's new show is one of his best

Culture

Cat's Paw Coral (Stylophora pistillata)

Environment

Corals bleached from heat become less resilient to ocean acidification

News

iceberg

Environment

Iceberg the size of Cyprus on collision course with Atlantic island

An iceberg the size of Cyprus is on a collision course with South Georgia, risking a major threat to the remote Atlantic island’s globally important penguin and seal colonies

News

Technology

Deep-sea mining is making the seabed the hottest real estate on Earth

Features

Environment

Should Japan dump radioactive water from Fukushima into the ocean?

Analysis

Earth

International Space Station image shows beauty of the world's oceans

Regulars

Earth

Silicon Valley billionaires want to geoengineer the world's oceans

Insight