WELLFLEET, Mass. (WPRI) — Rescuers worked to save 125 Atlantic white-sided dolphins that were stranded in Cape Cod on Friday morning. The dolphins were stranded during low tide in Wellfleet near Great Island. The International Fund for Animal Welfare (IFAW) says it is the largest single stranding event in the nonprofit's more than 25-year response history. IFAW has about 150 trained volunteers across Cape Cod and Southeastern Massachusetts. At least 25 IFAW staff and more than 100 volunteers responded to the scene in Wellfleet. RELATED: New dolphin rescue center to open on Cape Cod IFAW says ten dolphins died before rescuers arrived. While it isn't known exactly why dolphins strand, Cape Cod is a known hotspot for strandings due to its shape and tidal patterns. During low tide, the IFAW team covered the animals in sheets to prevent them from getting sunburnt. When high tide arrived in the afternoon, rescuers attempted to heard the dolphins back out into deeper water. In addition to wading through the water, the team used three vessels with underwater "pingers," creating noises to guide the dolphins in the right direction. On Saturday, IFAW team members will continue to monitor Wellfleet harbor to make sure the all dolphins are headed back out to sea. IFAW Rescuers worked to save 125 dolphins that were stranded off Wellfleet in Cape Cod on Friday. (Courtesy of IFAW)IFAW Rescuers worked to save 125 dolphins that were stranded off Wellfleet in Cape Cod on Friday. (Courtesy of IFAW)IFAW Rescuers worked to save 125 dolphins that were stranded off Wellfleet in Cape Cod on Friday. (Courtesy of IFAW)IFAW Rescuers worked to save 125 dolphins that were stranded off Wellfleet in Cape Cod on Friday. (Courtesy of IFAW)IFAW Rescuers worked to save 125 dolphins that were stranded off Wellfleet in Cape Cod on Friday. (Courtesy of IFAW)IFAW Rescuers worked to save 125 dolphins that were stranded off Wellfleet in Cape Cod on Friday. (Courtesy of IFAW)IFAW Rescuers worked to save 125 dolphins that were stranded off Wellfleet in Cape Cod on Friday. (Courtesy of IFAW) NEXT: Dead whale on Block Island identified Close Thanks for signing up! Watch for us in your inbox. Subscribe Now Daily Roundup SIGN UP NOW