A 9-year-old girl was seriously injured in a suspected bull shark attack while snorkeling off Boca Grande, Florida, prompting bystanders to rush to her aid.

The family of 9-year-old Leah Lendel says she was snorkeling Wednesday off Boca Grande when she was bitten by a shark. Her mother says Leah’s right hand up to the wrist was covered in blood and mostly ...