Can you imagine being that clam, 400 years in one spot, nothing to do but filter seawater and ponder the meaning of its own existence. For 400 years, wondering what it is all about. Something like Deep Thought from Hitchhikers Guide to the Galaxy. What is the purpose?
Apparently it is to get dragged up and slaughtered by some halfwits trying to prove something as blatantly obvious as global warming. Right after this, those same scientists will probably go and BBQ a sperm whale to prove that breathing in smoke particles are dangerous to your health.
Watch out for Vogons building space freeways everyone .....