We Were Wrong About Swordfish

Everyone knows only two things can kill a giant squid: a sperm whale, or a bigger squid. Then swordfish bill fragments started turning up in sharks, in whales and in the hull of a submarine. This is how a fish dives to 540 metres every afternoon, heats its own eyes to see in the cold, and takes apart an animal four times its weight. And why a squid built to spot a 40-tonne whale never sees it coming. 0:00 The third name on the list 0:31 The squid you're picturing is wrong 2:04 Two worlds, one door 4:14 A space heater behind the eyes 6:36 Why it never stabs 8:21 The sharks started washing up 10:39 The bout 12:01 The squid has no second wind 13:43 Then why are there any squid left? 15:28 Built for the wrong enemy 17:03 The commuter Sources: Carey 1982; Fritsches et al. 2005; Videler et al. 2016; Habegger et al. 2015; Dewar et al. 2011; Rosa et al. 2022; Penadés-Suay et al. 2019, 2025; Jambura et al. 2020; Machida 1970; Nilsson et al. 2012; Childress 1995; WHOI (Alvin 1967). Footage: NOAA Ocean Exploration, NOAA Fisheries, U.S. Navy (public domain). CC BY (YouTube): Azores Whale Watching TERRA AZUL, Nautilus Live. Wikimedia Commons (CC BY / CC BY-SA): Auckland War Memorial Museum, Inger E. Winkelmann, Momotarou2012, Mgiganteus1, Diego Delso, Taollan82, glynniqua, MathKnight & Zachi Evenor, Carina Gsottbauer, Gabriel Barathieu, Emőke Dénes, José A. Gil Martínez, Willis Lam; Naturalis (CC0). Silhouettes: PhyloPic (I. Contreras, J. Whitehouse). Some sequences are AI recreations.