Scuba Journal Magazine

Marine Life / Marine Mammals

Blue Whale

Balaenoptera musculus

Blue Whale
Photo: steve b
Kingdom
Animalia
Phylum
Chordata
Class
Mammalia
Order
Cetartiodactyla
Family
Balaenopteridae
Genus
Balaenoptera
Species
Balaenoptera musculus

The blue whale (Balaenoptera musculus) is the largest animal known to have existed, reaching well over 25 m. It has a long, streamlined, mottled blue-grey body, a broad flat head, a tiny dorsal fin set far back, and a tall, straight blow that can rise about 9 m.

Blue whales feed almost entirely on krill, lunging through dense swarms and filtering huge volumes of water through their baleen plates. They usually travel alone or in pairs and can cover vast distances between feeding areas.

In the Philippines blue whales are rare, with only occasional records from deep offshore waters, including sightings in the Bohol Sea. The species is listed as Endangered, and any sighting is of real scientific interest.

Photo: steve b, CC0 1.0, via iNaturalist