Seas cover 70% of our planet, and are full of life. But we are not taking very good care of the sea. Sometimes we treat the sea like a great big dustbin. Rubbish, plastic, sewage and dangerous chemicals all end up in the sea, and this can harm the animals and plants that live there. Or we use big boats and big nets to catch fish - and catch more than we need, or hurt animals with our nets.

Well, the animals have had enough - it's time to fight back!

"It's time to fight back!" whistled the Pink Dolphin to the sea creatures floating above the sea bed, far away from human ears. "If they continue to pollute our island we will all die out forever!"

Calls of agreement echoed through the water as the Pink Dolphin continued. "They have already killed the Crustaceans and poisoned the plankton we eat. We must find a way to stop them from destroying us!"

"Let's fight them, bite them, and eat them alive!" shouted the Tiger Shark, catching a seal in her great big jaws.
"Stop that now!" ordered the Pink Dolphin. "We must work together, not attack each other!"
The Tiger Shark's sharp teeth fell open in surprise and the seal dived out to safety.

"Let's sink their ships…!" suggested the big Blue Whale.
"…and turn them into soup!" added the Finless Bull Shark.

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