Dolphins have also been sighted in this area. After Hurricane Katrina, many bull sharks were sighted in Lake Pontchartrain. No more birds were sighted that day. Soon after ships were sighted on the horizon. Sea snakes have been sighted in huge numbers. Within minutes the submarine was again sighted from the air and was bombed. Herons have also been sighted on the lake. These animals have been sighted as far upriver as Richmond. Coyotes and turkeys have also been sighted. Bears are regularly sighted within the city. Lynxes are occasionally sighted in Anchorage as well. In 1844, lions were sighted south of the Riet River. Nearing the Colombian coastline, the escapees were sighted. Lionfish were first sighted in Brazilian waters in late 2014. Though rarer, it is still occasionally sighted in the country to this day.