How can researchers accurately measure seafloor movement? During Leg 1 of the summer #ONCabyss expedition, ONC assisted in deploying the University of Rhode Island's PIES (Pressure Inverted Echo Sounder), an instrument for monitoring movement of tectonic plates using sound. #KnowTheOcean

During Leg 1 of the summer #ONCabyss expedition, the team aboard the CCGS John P. Tully completed an impressive 50 CTD rosette casts. Hear directly from Stef, ONC's sea-going scientist, about how these casts help us deliver high-quality #BigData from the deep ocean to the surface. #KnowTheOcean

1/🫨 ONC’s land+seafloor seismic network successfully detected an #earthquake 70km northeast of Campbell River, BC, on Aug 30 & notified critical infrastructure subscribers. The earthquake occurred around 12:42am PT. University of Victoria CFI | FCI

The first #OceanHackWeek hosted in Canada wrapped up last week at Bamfield Marine Sciences Centre! Participants worked in teams tackling real oceanographic problems over five days using real datasets from ONC. We can’t wait to show you the results of their work! #KnowTheOcean

🚨DIVE ALERT 🚨ONC is aboard the M/V Canpac Valour stationed at Endeavour West Flank. ROV Mantis is 2,376 metres below sea surface recovering and deploying new instruments. Catch the action live 🌊 bit.ly/4xUgNbf #ONCabyss #KnowTheOcean

🚨DIVE ALERT 🚨 We are back in the water at Endeavour! ROV Mantis is diving 2,181 metres below sea surface to recover an autonomous mooring. Catch the action live 🌊 bit.ly/4xUgNbf #ONCabyss #KnowTheOcean

Talk about working under pressure! ROV Mantis is currently 2,200 metres deep, installing a new remote access sampler/phytoplankton sampler (RAS/PPS) under the watchful eye of a spider crab and a live online audience. Watch #ONCabyss now 🔗 bit.ly/4xUgNbf #KnowTheOcean

🚨DIVE ALERT 🚨ONC is aboard the M/V Canpac Valour at the Maine Endeavour Field! ROV Mantis is diving 2,196 metres below sea surface to deploy and recover instruments, collect Gas Tight sample, and more! Catch the action live 🌊 bit.ly/4xUgNbf #ONCabyss #KnowTheOcean

We shared why we collect sediment samples from Endeavour—but how do we recover the instrument itself? ONC Project Engineer Peter Bunton breaks it down during Leg 1 of this summer’s #ONCabyss expedition. Watch Leg 2 live 🔗 bit.ly/4xUgNbf #KnowTheOcean @innovation.ca @mclanelabs.bsky.social

What happens to the sediment collected from hydrothermal vents? 🌊 Hear from University of Victoria master's student Jack Carnochan, who joined ONC aboard the CCGS John P. Tully during Leg 1 of this summer's #ONCabyss. Leg 2 is now underway! Watch the live dives 👉 bit.ly/4xUgNbf

🚨DIVE ALERT 🚨ONC is aboard the M/V Canpac Valour at Barkley Upper Slope! ROV Mantis is diving 394 metres below sea surface to deploy a new a camera platform, recover the old camera, + prepare the vertical profile system for recovery. Catch the action live 🌊 bit.ly/4xUgNbf #ONCabyss #KnowTheOcean

Thank you to Ivan Semeniuk from the Globe and Mail for the great coverage of the Pacific Ocean Neutrino Experiment (#PONE) shallow-water testing on Granville Island this summer! Check out the article 🔭 bit.ly/4xPYNi6 #KnowTheOcean

Physicists want to catch neutrinos in the sea. Step 1: Make sure their machinery won’t drown

P-ONE could shed new light on a very strange particle – but first, it had to pass a swimming test on Vancouver’s Granville Island

theglobeandmail.com

Leg 2 of the summer #ONCabyss expedition mobilizes tomorrow aboard Canpac Marine Services’ motor vessel (M/V) Canpac Valour! We are sailing from Aug 19-28 to continue maintenance on the NEPTUNE observatory off the west coast of Vancouver Island. Watch the dives 🌊 bit.ly/4xUgNbf

🔭 Searching for the cosmos from the deep sea ONC and Pacific Ocean Neutrino Experiment partners finished a successful shallow-water testing on Granville Island! Next step 👉 deploying the first 1km subsea mooring off the BC coast. Read the full story 🔗 bit.ly/4vyKmyj #CdnSci

💅 kinda chic to operate world-leading ocean observatories 🌊 #KnowTheOcean

The 7.4M #earthquake that occurred today in the Columbia was detected by ONC’s seafloor seismic sensors in the Pacific, 6,929 kilometres away. There is no tsunami warning for the B.C. coast. View the live data 👉🏼 bit.ly/oncearthquakedata #KnowTheOcean

1/🧵 Leg 1 of #ONCabyss summer 2026 expedition has wrapped up with both the CCGS John P. Tully + M/V Canpac Valour safely returning to shore. During our time offshore the 13-person ONC + @uvic.ca team aboard the Tully were focused on completing various science-focused objectives 👇 @innovation.ca

🛳️ We met a blob sculpin, many deep-sea spider crabs, and of course Optimus Prime, while diving at the Endeavour site of the NEPTUNE observatory with Canpac Marine Services. Watch live 👉 ow.ly/HJnG50Zvfch #ONCAbyss @uvic.ca @innovation.ca

👋 Say hello to the locals at 2,200m! 🌊 ONC & Canpac Marine Services are diving at the Endeavour site of the NEPTUNE observatory, inside the Tang.ɢ̱wan – ḥačxwiqak – Tsig̱is MPA. Watch live 👉https://ow.ly/HJnG50Zvfch University of Victoria CFI | FCI

1/🫨ONC’s land+seafloor seismic network successfully detected an #earthquake 93 km northeast of Sayward BC, on July 30th & notified critical infrastructure subscribers. The earthquake occurred around 10:45 pm PT. @uvic.ca @innovation.ca

🌊 The ultimate Canadian tool for deep-sea science? A hockey puck. 🏒 ONC uses modified hockey pucks as grip pads for ROV arms to grab heavy underwater gear. Very Canadian, eh? 🇨🇦 🔗 Follow along on our live dives: ow.ly/Z7xf50Zv7uT #KnowTheOcean #ONCabyss @uvic.ca ic @innovation.ca ion.ca

Costco hands out hot samples—we collect ours at 300°C on the seafloor. 🔥 No typo! 2,200m below the surface, ROV Mantis is surveying hydrothermal vents. Follow the #ONCabyss action here: bit.ly/4hoq8CT @uvic.ca @innovation.ca

🚨DIVE ALERT 🚨 ONC is aboard the M/V Canpac Valour stationed at Endeavour! ROV Mantis is diving more than 2100 metres below sea surface! 🌊Watch the live dives 👉bit.ly/4hoq8CT  #KnowTheOcean #ONCabyss @uvic.ca @innovation.ca

The significant #earthquake that occurred today at 12:27 AM PDT, 5km east of Uto, Japan, was detected by ONC’s seafloor seismic sensors in the NE Pacific 8,067 kilometres away. There is no tsunami warning for the BC coast. View the live data 👉🏼 bit.ly/oncearthquakedata #KnowTheOcean

1/🫨ONC’s land+seafloor seismic network successfully detected an #earthquake 223 km west-southwest of Port McNeill, BC, on July 25 & notified critical infrastructure subscribers. The earthquake occurred around 11:33 am PT. @uvic.ca @innovation.ca

Follow along as the ROV Mantis dives of the west coast of Vancouver Island during #ONCabyss from July 24 to August 5! #KnowTheOcean

Jay T. Cullen@jaytcullen.bsky.social · last mo.

🌊🇨🇦 The CanPac Valour and ROV Mantis have finished operations in the Barkley Canyon off Vancouver Island & head offshore to the Endeavour hydrothermal vent field to rendezvous with the CCGS John P. Tully 🚢. Watch live video here www.oceannetworks.ca/expeditions/... @oceannetworks.ca

The #ONCabyss expedition returns to the NE Pacific w/ a dual-ship, two leg operation aboard M/V Canpac Valour + CCGS John P. Tully! From Jul 24–Aug 4, ONC will service the NEPTUNE observatory off Vancouver Island Watch the dives 🌊 bit.ly/4hoq8CT #KnowTheOcean CFI | FCI University of Victoria

1/🫨 ONC’s land+seafloor seismic network successfully detected a 4.8M #earthquake 219 southwest of Port Hardy, BC, on July 19 & notified critical infrastructure subscribers. The earthquake occurred around 11:41 pm PT. University of Victoria CFI | FCI

The 7.3M #earthquake that occurred July 17 off the southwestern coast of Mexico was detected by ONC’s seafloor seismic sensors in the Pacific, 4,974 kilometres away. There is no tsunami warning for the B.C. coast. View the live data 👉🏼 bit.ly/oncearthquakedata #KnowTheOcean

Recipients of the 2026 Roy Hyndman Ocean Observing Award 👇 🎓 Alireza Niksejel, Dalhousie University 🧪 Deep Learning for Long-Term Seismic Monitoring at the Endeavour Segment 🎓 Hayden Amidon, University of Victoria 🧪 New Observations of Oxygen: Calibration + Carbon Pump Modelling 👉 bit.ly/3Rimujm