The last surviving sheeps (short for leaf sheep nudibranch) in the council have convened on the flat surface of an algae-covered rock for an important meeting.
One of the sheeps cries out in a frightened shrill, "The wolves have found us! Two days ago, when many of us were grazing at Observation Rock, a few wolffish gobbled up half the flock."
"Then, it is time to find new lands." The lead sheep, who happens to be the largest and oldest amongst the council members, said and the council members nodded their heads vehemently in agreement.
The once 100000-strong flock have been reduced to a population of 2000. Within a year, several terrible events have befallen the sheeps. Large swarms of worms have ravaged their green grazing pastures. Cloudfish schools have started hanging around in the space above their usual grazing areas, blocking out essential sunlight for the leaf sheep nudibranch to photosynthesise. (A quick introduction for those unfamiliar with the sheeps: the sheep is small green nudibranch which consumes algae that would be reconstructed into tiny food-making factories in the the sheep's body. The sheep is hence able to produce food for their own consumption through photosynthesis, a process often thought exclusive to plants.) Some sheeps have reported sightings of the green wrasse, one of their many predators, lurking in the distant. Previous talks about migration have fallen through due to fear of unknown lands but the latest attack has made the move inevitable.
The leader continues, "The south will lead us to higher grounds where more sunlight reaches. And it is rumoured to have an abundance of exuberantly green algae fields." The sheep have not had a good meal in some time and the mention of algae fields suddenly intensified sheeps' hunger.
The next morning, when the wolffish are expected to be in deep slumber in their burrows, the sheep gather and begin their march towards the south. No sheep stayed behind.
The sheeps know they have reached their destination when endless rows of initimidatingly tall red corals greeted them. After facing no threats while making their way around the new territory, the sheep drop most of their caution and they start to climb a large yellowish green alage rock to sleep in the nooks and crannies of the rock.
Their arrival has not gone unnoticed by the resident red nudibranch, who are alarmed and angry that another nudibranch colony are sharing their territory.