It?s been nearly two years since Darryl Fornatora disappeared during a surfing trip to the Dominican Republic, and authorities appear no closer to finding out what happened to the West Palm Beach resident than they did the day he vanished.

For his family, frustration accompanies their grief. Not only has there been no trace of Fornatora, but there?s no certainty anybody ? not U.S. authorities, not Dominican Republic police ? is even looking for him.

?How does this happen that a citizen of the United States goes on a six-day vacation, disappears and nobody seems to give a damn?? said Gilbert Fornatora, Darryl?s 88-year-old father.

Darryl Fornatora, who was director of the Lake Park Tennis Center at the time he went missing, flew with a friend to the Caribbean island on Jan. 25, 2016, for a surfing vacation in the northern coastal town of Cabarete.

Fornatora was last seen two days later.

Dominican authorities close Fornatora case, rule it a drowning

Security officials with the U.S. Embassy in Santo Domingo wrote to Gilbert and Nancy Fornatora of Ocean Ridge in April 2016 referring to an ?active criminal investigation? into their son?s disappearance and promising the embassy was ?working closely? with the Dominican government on the matter.

But more than 20 months later, the probe appears to have produced few, if any, results. Whether the investigation is even active is anyone?s guess.

Fornatora?s family says it?s had no communication in nearly a year with the U.S. embassy. Robin Bernstein, a Palm Beach-based insurance agent and a charter member of the Mar-a-Lago club who was President Trump?s controversial pick to be U.S. ambassador to the Dominican Republic, has yet to receive a confirmation hearing.

Private investigators hired by the family provided clues and promising leads, but no resolution. A $25,000 reward for information leading to Fornatora has gone unclaimed.

The family is under no illusion that Fornatora, who would be 47, is still alive.

?There are dozens of possible scenarios, and all of them end violently,? said Christina Hendrex, Darryl?s sister. ?I think that my brother was murdered. No doubt in my mind. The why, I?m not sure of.?

Hendrex and her parents say the one person who might know is Matthew Rigby, the friend who accompanied Fornatora to the Dominican Republic. They haven?t spoken since a meeting shortly after Darryl disappeared and Rigby returned to Palm Beach County without their brother and son, and they say his recollections about what happened only left them with questions.

Multiple attempts by The Post to reach Rigby, a harbor pilot at the Port of Palm Beach, since Fornatora vanished have been unsuccessful.

The surfing trip was supposed to last until Jan. 31, but Rigby cut his visit short and returned to Florida on Jan. 28. The Fornatoras and Hendrex say Rigby said he did so because the waves around Cabarete were ?flat? ? but followed that by saying Fornatora had remained behind to do more surfing.