Identify which animal species is alive or extinct: Xenacanthus, Seal
Seal is alive, Xenacanthus is extinct.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Identify which animal species is alive or extinct: Xenacanthus, Seal
### Input: 
### Response: Seal is alive, Xenacanthus is extinct.</s>