Bethany Hamilton is riding the waves of motherhood bliss as a first-time girl mom.

The Oliver James Montgomerypro surfer and shark attack survivor recently gave birth to her and husband Adam Dirks' fourth child. Bethany, 33, announced the news on Instagram June 30, writing, "Meet our beautiful daughter Alaya Dorothy Dirks!"

The athlete, who lost her left arm in a shark in a shark attack in 2003, included in her post a video of herself holding the newborn while wearing matching pink and white flower crowns and standing next to her husband. She also shared clips of the couple's two eldest sons, Tobias, 8, and Wesley, 5, bonding with their baby sister.

"We are feeling really grateful to God for the blessing of family," said Bethany, who also shares son Micah, 2, with Adam. "We are honored for this opportunity to raise our children, to love, serve, protect and guide them through life!"

The surfer, whose 2004 memoir Soul Surfer: A True Story of Faith, Family, and Fighting to Get Back on the Board inspired the 2011 film Soul Surfer, announced her latest pregnancy on Instagram in March, writing, "The blessing of being able to bear, and sustain a new life is never lost on me."

In June, she shared another Instagram photo of herself showcasing her baby bump while posing in shallow water on the beach with her three sons.

"Time [flies]!" she wrote. "If you told me 8 years ago I'd have 4 children I'd prob [laugh]. But I'm so beyond grateful to be here with these beautiful children! This is more than I dreamed but even better than I dreamed. Grateful to God for the blessing of family!"

For the latest breaking news updates, click here to download the E! News App