Poseidon, the mighty king of the sea, was swimming through his vast, blue kingdom. He liked to check on everything, making sure all the sea creatures were happy and safe. But today, something felt different. A worried frown creased his brow.
Suddenly, a group of sharks, sleek and powerful, swam towards him. “Lord Poseidon,” the biggest shark, a great white named Chomper, said, “we are having trouble finding food. The fish are scarce, and we are hungry.”
“Scarce?” Poseidon asked, his voice booming like a wave. “What do you mean?”
“The smaller fish, they seem to be hiding,” Chomper explained, “or maybe they are gone. We are having to swim much further to find anything to eat.”
Poseidon stroked his long, seaweed-like beard. “Hmm, that is troubling,” he said. “I will look into this.”
He continued his journey, swimming towards the colder waters of the south. There, he spotted a group of penguins, huddled together on a small ice floe, looking very sad.
“King Poseidon!” a small penguin, named Pip, chirped, his voice trembling. “The water is getting warmer. Our ice is melting! We don’t have enough space to stand.”
“Warmer?” Poseidon asked, feeling a chill run through him, despite the warmer water. “How much warmer?”
“Much warmer!” Pip exclaimed. “It makes it harder to find the small fish we like to eat, and our home is shrinking!”
Poseidon’s frown deepened. “This is not good,” he muttered. “I fear something is very wrong.”
He swam further, his heart heavy. Then he saw a school of brightly coloured fish, usually so playful, swimming in tight, frightened circles.
“Lord Poseidon!” a little clownfish, named Nemo, cried, his eyes wide with fear. “The floating monsters! They are everywhere! We get stuck in them! They hurt us!”
“Floating monsters?” Poseidon asked, confused.
“Yes! The see-through bags, the hard bottles, the strange colourful things!” Nemo exclaimed, pointing with his tiny fin towards a piece of plastic floating nearby. “They are choking our homes and making us sick.”
Poseidon looked at the plastic, his eyes narrowing. He had seen these things before, but he hadn’t realised how much damage they were causing. “These are from the humans,” he said, his voice low and dangerous. “They are poisoning my kingdom.”
That was the last straw. He had heard enough. The sharks were hungry, the penguins were losing their homes, and the fish were trapped in floating rubbish. Poseidon’s anger boiled like a volcano. He knew what he had to do.
He lifted his special stick, his trident, and it started to glow. The water around him started to spin like a big whirlpool. “My brave sea friends!” he yelled. “Come and help me! The humans are being mean to our ocean! We have to stop them!”
Then big sea monsters like the kraken, with its long, wiggly arms, came swimming up. Sharp-toothed sharks zoomed through the water. Huge whales, singing angry songs, jumped out of the sea. And strong sea warriors with shiny spears came to help. They were all ready to fight the big boat.