Where to see Sei whales (Balaenoptera borealis) on dive liveaboards

Discover where divers may see Sei whales (Balaenoptera borealis), including the countries, regions, dive sites, and liveaboards linked to this marine creature.

The featured dive liveaboard shown opposite is the highest customer rated Mexico liveaboard where you can dive with Sei whales (Balaenoptera borealis). You can explore the Nautilus Explorer liveaboard, rated 8.9/10 by customers, and book it using this link.

1 Countries
1 Regions
1 Dive sites
2 Liveaboards
Sei whales marine creature

Where divers may see Sei whales

Explore the countries, regions, dive sites, and dive liveaboards where you can scuba dive with Sei whales (Balaenoptera borealis).

Countries and regions where Sei whales are found:

Country Regions
Mexico Sea of Cortez

Regions and dive sites where Sei whales are found:

Region Dive sites
Sea of Cortez Loreto bay (Loreto National Park)

Liveaboards and the dive sites they visit where Sei whales are found:

Liveaboard Dive sites
Loreto bay (Loreto National Park)
Loreto bay (Loreto National Park)

Top liveaboards for diving with Sei whales

The following liveaboards are the highest ranked dive boats by SDE Liveaboard Rating, to help you compare the best options for diving with Sei whales.

How SDE Liveaboard Rating works for the Nautilus Under Sea Liveaboard: 78%

The SDE Liveaboard Rating is Scuba Diving Earth’s own scoring system for comparing dive liveaboards at a glance. It adds together six individual category scores, each scored out of 10, covering the boat, cabins, diving, food, drinks, and non-diver companion features.

For the Nautilus Under Sea Liveaboard, those category scores combine into an overall SDE Liveaboard Rating of 78%. This helps you compare the overall onboard experience more quickly across the liveaboards shown below.

The SDE Liveaboard Rating for the Nautilus Under Sea liveaboard works by taking the six individual SDE Liveaboard Rating scores, with each one being scored out of 10 and then adding them together. For the Nautilus Under Sea liveaboard are ( [Boat:9/10] + [Cabin:6/10] + [Diving:10/10]+ [Food:8/10] + [Drinks:9/10] + [Non-diver:5/10] = 47/60). This total is compared to the maximum possible score of 60/60 to turn it into an overall percentage – which for the Nautilus Under Sea liveaboard is calculated as 47/60 = 78% SDE Liveaboard Rating.

This makes it easy to compare different liveaboards at a glance. See a more detailed explanation of how SDE Liveaboard Rating works together with all dive liveaboards ranked by SDE Liveaboard Rating .