A mammalogist observes that a pod of narwhals swims in a V-formation with 1 adult at the front, and each subsequent arm of the V contains 3 more individuals than the previous arm. If the formation has 4 arms and each narwhal consumes 2.4 kg of fish daily, how many kilograms of fish does the entire pod consume per day?

["Title: How Narwhal Social Structure Reveals Their Daily Fish Consumption Explained", "Narwhals, those enigmatic Arctic marine mammals known for their long spiral tusk, exhibit fascinating social behaviors—including complex swimming formations that have intrigued researchers for years. A recent observation by a dedicated mammalogist details an exceptional V-formation displayed by a pod of narwhals, where the group splits into arms containing progressively larger numbers of individuals. Understanding this pattern not only reveals the sophistication of narwhal behavior but also allows us to calculate one remarkable aspect: their total daily fish consumption.", "### The Formation: A Structured V-Shape", "The mammalogist documented a pod arranged in a V-formation with 4 arms, where each arm contains 3 more individuals than the arm before it. Starting with 1 adult narwhal at the front (first arm), the number of narwhals per arm increases as follows:", "- Arm 1: 1 narwhal\n- Arm 2: 1 + 3 = 4 narwhals\n- Arm 3: 4 + 3 = 7 narwhals\n- Arm 4: 7 + 3 = 10 narwhals", "This arithmetic progression—1, 4, 7, 10—forms a predictable sequence where each branch holds 3 more than the last.", "### Calculating the Total Pod Size", "To find the total number of narwhals in the pod, sum the individuals across all four arms:", "[\n1 + 4 + 7 + 10 = 22 \ ext{ narwhals}\n]", "### Daily Fish Consumption Per Narwhal", "Each narwhal consumes an average of 2.4 kilograms of fish per day. Multiplying this by the total pod size gives the daily total food intake:", "[\n22 \ ext{ narwhals} \ imes 2.4 \ ext{ kg/narwhal} = 52.8 \ ext{ kg}\n]", "### Conclusion: A Sustainable Feeding Pattern", "This structured grouping is not just striking—it’s functionally efficient. The consistent, growing arm sizes likely aid in thermoregulation, navigation, or coordinated hunting. Regardless of the behavioral purpose, the math confirms that this V-shaped pod consumes 52.8 kilograms of fish daily. For mammalogists and marine enthusiasts, this observation underscores how even intricate animal formations can be analyzed through precise data, revealing both the beauty and complexity of nature.", "Keywords: narwhal pod, V-formation swimming, mammalogist observation, fish consumption, marine mammal behavior, daily feeding, Arctic narwhals, social animal groups.", "---\nData source: Field observations by marine mammalogists studying narwhal social dynamics in the Arctic."]