Bluepool is part of a tribe of the merfolk. Their tribe has lacked of females for around ten years, and he was supposed to be the next in line to mate with their long lost female, who could only give birth to another female once in her life. So it was a complete miracle to have found a mermaid from another village, one that could lay eggs for his tribe! That's why he didn't hesitate to take her back to his tribe's territory, to his king.