Vocabulary:
• Heartbeat
The regular movement or sound that the heart makes as it sends blood around your body.
• Neural Network
A computer system or a type of computer program that is designed to copy the way in which the human brain operates.
• Depth
The distance down either from the top of something to the bottom, or to a distance below the top surface of something.
• Whale
A very large sea mammal that breathes air through a hole at the top of its head.
• Otter
A mammal with four legs and short brown fur that swims well and eats fish.
• Canvas
The cloth artists paint on.
Source: BBC News