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Case Description

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Summary based on the NamUs case record (MP37562) and 8 other sources
On the morning of November 8, 2016, 43-year-old Carlos Amaral embarked on a fishing trip from the Sandwich Marina in Massachusetts. He was joined by his son, Dylan Amaral, and a friend, Mario Fialho, aboard a 23-foot Wellcraft vessel named "Dad Sea Cave". The group set out across Cape Cod Bay with the intention of fishing for mackerel near Race Point, at the tip of Cape Cod. They were experienced fishermen, described as men who loved the sea. Their planned return to the marina was for 2:00 p.m. that afternoon.

As the day progressed, concern grew when the "Dad Sea Cave" failed to return as scheduled. By 7:00 p.m., a friend of the boaters alerted the Coast Guard that the men had not come back to the marina. An immediate and extensive search of Cape Cod Bay was launched. The men's truck and boat trailer were found still parked at the Sandwich Marina, a somber confirmation that they had not made it back to shore. The search and rescue operation involved multiple agencies, including the Coast Guard, Massachusetts State Police, and various local fire and police departments. Search efforts included boats and aircraft, methodically covering the waters between Sandwich and Provincetown.

Despite the comprehensive search, which spanned over 3,800 nautical miles, no signs of the "Dad Sea Cave" or the three men were ever found. After two days of intensive searching with no positive results, the Coast Guard made the difficult decision to suspend their active search. The disappearance of Carlos Amaral, his son Dylan, and their friend Mario Fialho remains a painful mystery for their families and the coastal community. The case serves as a solemn reminder of the unpredictable nature of the sea, leaving behind unanswered questions and the enduring hope for closure. The official search was called off, though the case remains open, a lingering echo of a day that began with the promise of a peaceful fishing trip and ended in profound loss.

Last Seen: Nov 8, 2016

Possible Unidentified Matches (3)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

76%Possible
John Doe — Waterbury, Connecticut
UP94477 • Found Aug 13, 2022
View case
Sex ✓Male
Age 100%Est. 48–62 vs 43 when missing
Race 100%White
Location 69%131 mi away
TimingFound 6 years after last seen
Height 100%5'7"–6'1" vs 5'7"
Hair 100%Brown vs Brown
75%Possible
John Doe — Queens, New York - unidentified case UP81157
John Doe — Queens, New York
UP81157 • Found May 26, 2021
View case
Sex ✓Male
Age 85%Est. 35–55 vs 43 when missing
Race 100%White
Location 58%185 mi away
TimingFound 5 years after last seen
Height 100%5'8" vs 5'7"
Weight 100%168 lb vs 160 lb
Hair 100%Brown vs Brown
Eyes 100%Hazel vs Hazel
75%Possible
John Doe — Philadelphia, Pennsylvania - unidentified case UP151698
John Doe — Philadelphia, Pennsylvania
UP151698 • Found Oct 13, 2025
View case
Sex ✓Male
Age 100%Est. 45–60 vs 43 when missing
Race 100%White
Location 48%270 mi away
TimingFound 9 years after last seen
Height 100%5'6"–5'8" vs 5'7"
Weight 100%150–155 lb vs 160 lb
Hair 100%Brown vs Brown
Eyes 100%Hazel vs Hazel

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.