Summary:
- The article discusses the discovery of a unique species of clam called the Mytilus trossulus, which has the ability to transmit a form of cancer that is contagious.
- This cancer-causing clam is considered an "immortal" creature, as it can regenerate its own cells and avoid aging, potentially living indefinitely.
- The discovery of this clam has raised concerns among scientists about the potential risks it poses, as the contagious cancer it carries could have significant implications for human and marine life.