SEATTLE (AP) — Three endangered Southern Resident killer whales living near the Washington coast are pregnant, prompting boating regulations in the state. Wildlife officials have seen a high rate of failed pregnancies among the orcas in recent years so they are urging boaters to follow “Be Whale Wise” regulations. Under the Washington law, vessels are required to stay 300 yards away from the whales and at least 400 yards from their path. Water crafts must also reduce their speed when they’re near the whales. The regulations help the pregnant whales move around, feed and socialize in quiet waters.