top of page



Embark on an unforgettable journey into the fascinating world of blue whales, the largest creatures on Earth. At Net Zero Expeditions, we invite you to witness the awe-inspiring annual aggregation of blue whales for feeding in the waters of San Diego during the summer months. Join us as we explore the remarkable presence of these gentle giants, delve into their conservation efforts, and discover intriguing and curious facts that make blue whales even more captivating.


Blue whales (Balaenoptera musculus) are renowned for their immense size and breathtaking beauty. With lengths reaching up to 100 feet and weights of up to 200 tons, they surpass the dimensions of any dinosaur that ever roamed the Earth. Their sleek, bluish-gray bodies and curved dorsal fins add to their majestic allure, making them a true wonder of the ocean.

During the summer months, blue whales embark on long migrations in search of productive feeding grounds. San Diego serves as a crucial stopover for these majestic mammals due to the abundance of krill, their primary food source. Nutrient-rich upwellings create an ideal environment, attracting blue whales to congregate here and feast on the abundant krill blooms, which sustain their impressive size and strength.


At Net Zero Expeditions, we believe in responsible and sustainable tourism. Our eco-touristic whale-watching tours prioritize the well-being of these magnificent creatures and respect their natural habitat.


Besides our professional crew, what sets us apart is our state-of-the-art Zodiac Ribs, designed for optimal whale-watching experiences. Its low profile brings you closer to the action, allowing you to witness these majestic creatures in their natural environment like never before.

Furthermore, this is an extended trip lasting up to 8 hours which virtually guarantees to find a blue whale and most likely other species of cetaceans. 



Despite their grandeur, blue whales face significant conservation challenges.

They are currently listed as "Endangered" by the IUCN. Historical factors such as whaling, entanglement in fishing gear, and habitat degradation have significantly impacted their populations. Today, they continue to face challenges like vessel collisions, noise pollution, climate change, and prey availability.


Collaboration is vital for their conservation. Organizations like @whales_org (Whale and Dolphin Conservation), @oceanicpreservationsociety (Oceanic Preservation Society), and @conservationorg (Conservation International) work tirelessly to protect these magnificent creatures through research, advocacy, and establishing marine protected areas.


1 - Blue whales hold the title of being the largest animals to have ever existed on Earth, surpassing even the largest dinosaurs. Their tongues alone can weigh as much as an elephant!

2 - Despite their colossal size, blue whales have a diet primarily consisting of tiny krill. They consume about 4 tons of krill each day during the feeding season.

3 - These gentle giants can produce incredibly loud sounds, reaching up to 188 decibels. Their low-frequency songs can travel for hundreds of miles underwater, allowing them to communicate across vast distances.

4 - Blue whales have baleen plates instead of teeth, which they use to filter out their tiny prey. Each plate is made up of fringed bristles that help trap the krill while allowing water to pass through.

5 - The spray or spout of water visible when a blue whale surfaces can reach heights of up to 30 feet, making it a spectacular sight for whale watchers

bottom of page