Two students from an elite California high school, a female ship cook — and the owner of the diving company that chartered Monday’s ill- fated boat trip — are among those feared dead in the horror.

The two kids attended the Pacific Collegiate School in Santa Cruz, and both they and a pair of parents from the community were aboard the doomed boat Conception, local KSBW-TV reported Tuesday.

“Our hearts and prayers are with the victims and for the families of those missing, particularly those of our students,’’ the public charter school, which consists of grades 7 through 12, said in a statement.

Also aboard the ship was Kristy Finstad, a 41-year-old marine biologist who along with her husband ran Worldwide Diving Adventures, which had hired the boat for the three-day holiday-weekend diving excursion off the coast of Santa Barbara.

Finstad’s husband was not part of the trip, which ended in disaster when fire broke out in the middle of the night, trapping all 33 passengers plus a crew member below deck.

“No final word on my sister Kristy; however, it is likely she has transitioned to be with the good Lord,” Finstad’s brother, Brett Harmeling, wrote on Facebook.

Kristy inherited the diving business from her father when he retired. Her brother told the Los Angeles Times that his sister was tenacious, and, “If there was a one percent chance of her making it, she would have made it.’’

The sole crew member feared dead was a 26-year-old female cook aboard the boat, her sister told KTLA-TV.

The sibling was at a makeshift memorial for victims and lamented that she hadn’t heard from her sister since the tragedy.

“She was an amazing person,” said the sibling, who only gave her name as Olivia and declined to identify her sister. “She had the biggest heart. She was my role model, my big sister, she was everything to me, and she’s just gone now.”

Three passengers celebrated their birthdays aboard the ship hours before the fire, according to the Times.

They included a 17-year-old girl who was on board with her parents. It’s not clear whether the teen may have been one of the Pacific high-school students.

Santa Barbara County Sheriff Bill Brown said Tuesday that officials have heard “anecdotally’’ that the victims included “some people in their sixties.’’

“The majority were from the Santa Cruz, San Jose, Bay Area region,” Brown said.