Laying the reefs Published May 28, 2020 - 7:49 p.m. Make us preferred on Google A total of 750 artificial Triton reefs, made of steel slugs, by-products of steelmaking, are transported on a ship in the waters near Ulleung Island on Thursday. Posco laid the reefs near the island ahead of Korea's Ocean Day on May 31. POSCO 포스코 ulleungdo island triton slug posco ocean day industry business artificial reef 바다의 날 Make us preferred on Google
![A total of 750 artificial Triton reefs, made of steel slugs, by-products of steelmaking, are transported on a ship in the waters near Ulleung Island on Thursday. Posco laid the reefs near the island ahead of Korea's Ocean Day on May 31. [POSCO]](https://image.koreajoongangdaily.com/10499329.webp?imageId=10499329&width=960&height=540&format=jpg)
