When there’s an underwater explosion, “it feels like the entire ocean collapses on you,” longtime diver and environmentalist Terence Lim says. Diving in Malaysia’s waters for 25 years, he has felt the pressure waves from fishermen’s homemade bombs and seen how explosions turn once vibrant reefs into rubble. Though outlawed, this explosive fishing method is common in Southeast Asia and along the Tanzanian coast due to its extreme efficiency. Now, after decades of largely futile attempts to crack down on blast fishing, environmentalists and marine scientists are turning to what they believe could prove the missing link in their efforts: acoustic data MORE