The boy, his cousin and her mother all died in the incident
A seven-year-old boy drowned off an Essex beach and suffered a fatal brain injury while on holiday with his family, a coroner has heard.
Musa Ahmed died six days after getting into difficulty in the water in West Mersea on July 22.
His cousin Sameeha Rahman, 15, and her mother Shelina Rahman, 41, both from Ilford in east London, also died in the incident.
Musa, from Romford in Essex, was brought to shore, stabilised and then flown to the Royal London Hospital before he died on July 28, the opening of an inquest into the deaths heard on Thursday.
The hearing at Chelmsford County Hall was told the trio had been on a family holiday at the time and that post-mortem examinations had given a provisional cause of death as drowning for all three.
For Musa, hypoxic ischaemic brain injury was also recorded as a provisional cause of death.
Senior coroner for Essex Lincoln Brookes said: “Clearly it is so tragic to come across any death of any individual but when three occur at the same time and of the same family, one cannot underestimate the tragic nature of such an incident.”
Mr Brookes offered his “deepest condolences” to the family, friends and loved ones of the victims.
Essex Police previously said officers were called by the ambulance service at 5.35pm on July 22 after reports that several people had got into difficulty in the water near Seaview Avenue.
The coroner adjourned the inquest to January 19, 2027.
