The Tibia Mariners from Elden Ring return in Nightreign, appearing as Night Bosses in rivers and lakes, accompanied by skeletons. The Mariner can use physical attacks with its horn, but they’re easily seen and can be dodged with ease.
Deadlier attacks include a boat slam and a wave crashing, both of which can be predicted by the boat rising into the air. Create distance from the Mariner as these attacks cover a wide area around it. The Tibia Mariner can also teleport during the fight and summon more skeleton enemies. It is recommended to defeat or distract skeletons to avoid getting staggered by attacks.