The Timingilam is a huge aquatic creature that can swallow whole whales in one bite, as written about in the ancient historical text, Mahabharata (Vana Parva 168.3). It is also mentioned in Srimad Bhagavatam (12.9.16), Ramayana (Yuddha-kanda 4.114), Susruta Samhita (Ch.45), and Caitanya-caritamrta (Madhya-lila 13.142).
References
Timingila Wikipedia(Text) CC BY-SA