Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the ...

Anatomically they’re relatively simple animals; they lack not just brains ... Fish couldn’t compete with the jellies for food—sea walnuts eat as much as 10 times their body weight a day ...

Predators are animals that eat other animals in order to survive ... Although they spend most of their time out at sea feeding on fish, they can often be seen resting on the beach.

Sensors attached to animals gather valuable data to track and mitigate the human influence on marine life. A Kobe University ...

Ocean habitats are large and wet. They are hotter near the equator ... Whales are the biggest animals in the world and most only eat plankton, one of the smallest. They must have to eat a lot!

In general, brightly colored ocean animals should not be touched, as it is often a signal of them being venomous. Blue-ringed octopuses are certainly attractive, but they have a venom that is more ...

The iguanas' 8,000-kilometer trip — one-fifth of the Earth’s circumference — is the longest made by a flightless land vertebrate.

We eat fish from the ocean, we breathe the oxygen it gives off ... Plankton is important to ocean health. They provide food for many animals, and they are also a carbon sink. Image: Napat/Shutterstock ...