OK, last bids for survival. We know there was a meteorite on the other side of the planet, so there will be nutrients there. We just need to spread the plantlife. This turn three species will speciate, with some staying behind with adaptation to the new shellfolk order, and others will leave across the vast uninhabitable sea to create new biomes safe from unsustainable predation.
Speciate Grönland Livyat:
1. Massively increase the Trimethylamine N-oxide levels in its flesh, allowing it to live at lower pressures and also making its flesh toxic (it might be being squeezed out, but this might help it live on the periphery). [SS]
2. Flatten the back of this Lifeship Livyat, making it a solid platform for algae to encrust and grow. Send it out across the uninhabitable zone to live on the other side of the planet.
Whose going to cultivate that algae onto the Livat?
Speciate the Croccy Terrub:
1. Become domesticated and send to the Shellfolk homelands in the shallows to act as their all-purpose livestock and companion animals (this may require the parasitism aspect of their lifecycle to end, with eggs instead being cultivated by Shellfolk as an industrial foodstuff) [SS]
2. Become symbiotic with the Lifeship Livyat, cultivating plantlife on their bodies (again might need to atrophy the sludgiboo egg laying).
Who else is taking the Lifeship?
Speciate Clingy Dikencovy
1. Move to the Shallows and become barnacle-like, latching onto the Kō-Äh's gelatinous forms (linking their success to that of the Ko) [SS]
2. Become symbiotic with the Lifeship Livyat, hitching a ride on its back, eating algae particles cultivated by the terrub, and helping feed the Livyat and Terrub in turn.
Happy Birthday KW!