{
  "id": 2004785,
  "title": "Comparative analyses of tailbeat frequency and stride length reveal how regionally endothermic fishes cruise fast",
  "url": "https://urgent.news/2026/08/19/comparative-analyses-of-tailbeat-frequency-and-stride-length-reveal",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-19T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.14.744074v1?rss=1"
  },
  "original_language": "en",
  "account": null,
  "summary": "Cruising speed is a key factor affecting prey-search efficiency and migration range in continuously swimming animals. Tunas and lamnid sharks (e.g., white sharks) have convergently evolved traits for high-speed cruising, including the ability to maintain slow-twitch, aerobic red muscle (RM) warmer than ambient water, known as RM endothermy. Despite their well-known high cruising speeds, kinematic…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}