# Blue Whale (*Balaenoptera musculus*) The blue whale is the largest animal on Earth! These gentle giants swim in the ocean and can be found in many parts of the world. - **Category:** [Mammals](https://www.snappit.app/explore/categories/mammal) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Also known as:** Great Blue Whale, Sulfide Whale ![Blue Whale](https://res.cloudinary.com/drieglelr/image/upload/v1771426832/objects/4514.jpg) ## Appearance The Blue Whale is a sleek, elongated mammal with a mottled blue-gray color, often appearing pale or yellowish underneath from diatoms. Its vast size, almost flat head, and small dorsal fin set it apart from other whales. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Chordata - **Class:** Mammalia - **Order:** Artiodactyla - **Family:** Balaenopteridae - **Genus:** Balaenoptera ## Interesting facts - A blue whale calf drinks enough milk each day to fill a bathtub! - The blue whale's tongue alone can weigh as much as an elephant! - Their heart beats just 2-10 times per minute while diving deep! - They sing incredibly low-frequency songs that travel hundreds of miles! ## Special abilities - **Giant Filter-Feeder:** Blue Whales can gulp vast amounts of water because of their baleen plates that help them filter out tiny krill. - **Oceanic Communicator:** Blue Whales have the loudest calls of any animal that help them communicate across hundreds of miles of ocean. - **Deep Dive Specialist:** Blue Whales can dive to impressive depths because their bodies are adapted to withstand immense water pressure. ## Measurements & details - **Length:** 2400-3000 cm - **Weight:** 100000-200000 kg - **Lifespan:** 80-90 years - **Speed:** 30 km/h - **Litter Size:** 1 - **Gestation:** 330-365 days ## Diet & Feeding These giant whales gulp down massive amounts of tiny ocean creatures called krill. - **Primary Foods:** Euphausia superba, Thysanoessa inermis, Meganyctiphanes norvegica - **Foraging Method:** Filter feeding ## Ecological connections - **Eats:** Antarctic Krill (*Euphausia superba*) — their primary food source - **Eaten by:** [Orca](https://www.snappit.app/explore/orca) (*Orcinus orca*) — occasionally prey on calves - **Symbiotic with:** Diatom (*Cocconeis ceti*) — grows on skin, causing yellow tint - **Symbiotic with:** Whale Barnacle (*Coronula diadema*) — attaches to skin for transport ## Traits - [Furry](https://www.snappit.app/explore/traits/furry): Furry describes animals possessing a dense covering of soft hair or fur. - [Social](https://www.snappit.app/explore/traits/social): Social animals live in organized groups, cooperating for survival benefits such as foraging, defense, and raising offspring. - [Filter Feeder](https://www.snappit.app/explore/traits/filter-feeder): Filter feeders obtain nutrients by straining suspended food particles and small organisms from water. - [Keystone Species](https://www.snappit.app/explore/traits/keystone-species): Describes a species whose presence and role have a disproportionately large effect on its environment. - [Aquatic](https://www.snappit.app/explore/traits/aquatic): Aquatic habitats encompass environments where organisms live predominantly in water, including oceans, rivers, lakes, and wetlands. - [Giant](https://www.snappit.app/explore/traits/giant): Giant describes organisms or objects of significantly larger size than average for their species or type. - [Marine](https://www.snappit.app/explore/traits/marine): Marine habitats encompass all saltwater environments of the Earth's oceans, supporting an immense diversity of aquatic life. - [Migratory](https://www.snappit.app/explore/traits/migratory): Migratory animals undertake seasonal movements from one region to another, typically in response to changes in climate or food availability. - [Protected](https://www.snappit.app/explore/traits/protected): Protected status signifies a species or area is safeguarded by legal measures and conservation efforts to prevent harm or loss. ## Collections - [Mammals](https://www.snappit.app/explore/collections/mammals) ## Safety **Danger:** 1/5 · Very low Blue whales are very big and live in the ocean, so it's best to admire them from a safe distance. ## Frequently Asked Questions ### How to identify Blue Whale? Compare ears, muzzle, tail, feet and coat markings. Size is hard to judge without something nearby for scale, and young mammals may not have adult coloring yet. Mammal Identifier: upload a photo and compare the visible details. ### How long is Blue Whale? 2400-3000 cm ### How much does Blue Whale weigh? 100000-200000 kg ### How long does Blue Whale live? 80-90 years ### How fast can Blue Whale move? 30 km/h ### What does Blue Whale eat? These giant whales gulp down massive amounts of tiny ocean creatures called krill. ### How does Blue Whale hunt? Filter feeding ### How many babies does Blue Whale usually have? 1 ## Where to spot - [California Academy of Sciences](https://www.snappit.app/guides/places/california-academy-of-sciences-california) — California, US · Zoo - [California Academy of Sciences](https://www.snappit.app/guides/places/california-academy-of-sciences) — California, US · Aquarium ## More Mammals - [Eastern Fox Squirrel](https://www.snappit.app/explore/eastern-fox-squirrel) (*Sciurus niger*) - [Eastern Cottontail](https://www.snappit.app/explore/eastern-cottontail) (*Sylvilagus floridanus*) - [Eastern Chipmunk](https://www.snappit.app/explore/eastern-chipmunk) (*Tamias striatus*) - [California Ground Squirrel](https://www.snappit.app/explore/california-ground-squirrel) (*Otospermophilus beecheyi*) --- Source: [Blue Whale: Characteristics, Facts & Places to See — Snappit](https://www.snappit.app/explore/blue-whale)