Did The 100-Year-Old Barrel Sponge Survive? We Finally Returned

We returned to the barrel sponge we tried to save. What we found raised more questions than answers. Months ago, we discovered a 100-year-old Giant Barrel Sponge (Xestospongia testudinaria) sliced clean in half at 100 feet — a wound no accident could have made. We found the severed portion nearby, gently rejoined it to the main body, and left hoping it would heal. This is what we found when we came back. The Barrel Sponge is still standing. But it is not the same. The reattached portion has slid downward, pushed by strong currents. The once-white exposed flesh has turned dark brown on one side and green on the other — signs of tissue necrosis and algal colonization in areas where the sponge has stopped filtering. The base has developed large cavities, hollowing from beneath. The structural integrity of the entire organism now depends on a few remaining solid strands. And something has moved in. A Yellow-Edged Moray Eel (Gymnothorax flavimarginatus) now lives inside the sponge's chimney — the same chimney that was sliced open months ago. Small fish shelter in the cavities. Cleaner shrimps have taken up residence in the gaps. The reef, indifferent to the sponge's condition, has claimed it as habitat regardless. Did it survive? The honest answer is: partly. The cut didn't end it. But the wound isn't closed. Parts of this sponge are still alive. Parts are not. We don't know what happens next — and neither does the sponge. We will keep returning. 🎬 WATCH PART 1 FIRST: 100-Year-Old Barrel Sponge Sliced In Half At 30M | We Found What Did It →    • 100-Year-Old Barrel Sponge Sliced In Half ...   Giant Barrel Sponges are among the oldest living animals on the reef. A single specimen can live for centuries, filtering hundreds of liters of water per hour and supporting entire micro-ecosystems. When one is damaged, the reef loses far more than a single organism. 🤿 Filmed During A Technical Scooter Dive On A Deep Remote Reef 📍 Depth: 30–45 meters (100–149 ft) ⚠️ Marine conservation | Real underwater footage | No reenactments If you care about coral reefs, watch this one to the end. 🔔 Subscribe for more underwater exploration and marine conservation content. Giant Barrel Sponges are among the oldest living animals on the reef. A single specimen can live for centuries, filtering hundreds of liters of water per hour and supporting entire micro-ecosystems. When one is damaged, the reef loses far more than a single organism. Who Is Go Dive PH : We are a technical scuba training and reef advocate team. The reef cannot speak. But we can. Through underwater videos, we document what lies below. We make the invisible visible—revealing both its beauty and the threats it faces. Because once you see it, you cannot unsee it. And that’s where change begins. Join us. Let’s be a voice for the silence. Key Moments: 00:00 Something Living Inside The Sponge 00:20 Flashback - When We Found It Sliced In Half 00:35 Flashback - Finding The Severed Part 01:09 Flash Back - Joining The Severed Part 01:40 We Left It Like This Months Ago 01:47 Today We Return To The Sponge 02:27 Approaching The Deep Reef 02:37 Approaching The Sponge 03:20 The Severed Part Has Slid Down 03:33 The White Flesh Turned Dark 03:39 Cavities On The Flesh 03:45 Green Pigmentation On Left Side 04:05 Something Is Moving Inside 04:25 Face To Face With Moray Eel 04:47 Eel Size & Weight 05:00 Eel Facts 06:24 Sponge Large Greenish Cavities 06:55 Rear Bottom Erosion & Cavities 07:29 Fusing In Some Parts 07:54 Left Side Base Hollowed Out 08:37 Backside Cavities 09:26 Did The Sponge Survive? 09:57 Epilogue #technicaldiving #scubadiving #underwaterphotography #marineconservation #underwater #reef #oceanmysteries #ocean #sustainablefishing #nitrox #documentary #techdiving #padi #underwateradventure #godiveph #philippines ‪@SUEXdpv‬ ‪@HalcyonDiveSystems‬ ‪@GoPro‬ ‪@PADI‬ https://techasia.ph