A poem from the Exeter Book titled for one of these mammals describes an encounter with Fastitocalon, an Aspidochelone that behaves like another creature sometimes described as one of these mammals, the Jasconius encountered by Saint (*) Brendan.
God summons one of these animals to devour corn after King Solomon prays to feed all the creatures in the world. The hunter Natsilane kills his brother-in-law with one of these animals after growing it from yellow cedar. A poem from the Exeter Book titled for one of these mammals describes an encounter with Fastitocalon, an Aspidochelone that behaves like another creature sometimes described as one of these mammals, the Jasconius encountered by Saint (*) Brendan. Big Raven eats mushrooms in order to gain enough strength to move one of these animals, which are preyed upon by thunderbirds. To escape Ruatapu, Paikea rides one of them in a Maori myth. Along with seals and walruses, they were born from the chopped fingers of Sedna. For 10 points, name these mammals exemplified by the Leviathan and the swallower of Jonah.
God summons one of these animals to devour corn after King Solomon prays to feed all the creatures in the world.
whales [or cetaceans; antiprompt for order on specific members of Cetacea including dolphins; prompt for type of creature on sea monsters or similar answers]