By Harvey


Balaenoptera borealis

 Sei whales are the third biggest whales the fin whales and the blue whales are the only bigger whales . The sea whales can get 19 m long and weigh 28 tones .


Sei whales are the fastest whales. They can go 38 kph but the sail fish can still go faster.

We got this picture from 

Sei whales are baleen whales so they eat krill and zooplankton but they must eat 900 kg of plankton every day.  That's a lot of food!

Sei whales live in deep waters of subpolar and subtropical oceans and are rarely found in tropical waters .


Mating happens in subtropical waters. The sei whale's gestation takes 11-12 months. They stop drinking milk and start eating plankton as they grow up. Females give birth every 2-3 years and start becoming mothers at 8-10 years old .

not-so-fun fact

When a sailor caught a Sei whale he described the noise it made as a crying noise .


I got information from Wikipedia and the book "Whales Dolphins and Porpoises" by Harrison and Bryden.

Contact Us

We are on the water so the best way to contact us is by email and we will get back to you as soon as we can:



©  Proudly created with