Incredible Weigh-In Event at Kamogawa Sea World Revealed Surprising Animal Weights

Weighing Marine Animals: An Event at Kamogawa Sea World

On November 1, 2025, Kamogawa Sea World, located in Chiba, Japan, celebrated "Weighing Day" with a public weigh-in event featuring various animals, including the bottlenose dolphin, walrus, Humboldt penguin, and a baby loggerhead turtle. This not only provided entertainment for visitors but also highlighted the importance of monitoring animal health and growth through weight measurement.

The weigh-in drew in a crowd eager to witness how each species was weighed, each requiring different techniques thanks to their unique shapes and sizes. The larger creatures, like the bottlenose dolphin and the walrus, were taught to step onto customized scales using hand signals, showcasing the effective training techniques employed by caregivers. This approach promotes ease and minimizes stress for the animals.

Conversely, the smaller Humboldt penguins were contained in baskets or buckets to assist in their weighing, where a scale similar to those used by humans was utilized. For the one-year-old loggerhead turtle, a compact kitchen scale was employed. Caregivers made thoughtful choices regarding the weighing methods, ensuring they were as comfortable and non-invasive as possible for the animals.

The results of the weigh-in revealed some fascinating figures. The bottlenose dolphin tipped the scales at 260 kg, while the walrus weighed in at an impressive 1,003 kg. The Humboldt penguins were lighter, weighing around 3.8 kg, and the young loggerhead turtle weighed only 1.32 kg. Each of these figures is crucial for understanding the health and growth patterns of these marine species.

Onlookers, including families and friends, were amazed at the creativity and care that went into the weigh-in process. The event was not only educational but also engaged the community in a fun and interactive manner. Visitors were encouraged to check the official Kamogawa Sea World YouTube channel for a video recap of the event, providing an in-depth look into the fascinating happenings of the day.

Kamogawa Sea World, part of the Granvista Hotel & Resort Group, was established in 1970 and houses approximately 800 species of marine life, showcasing around 11,000 marine animals. With popular performances featuring killer whales, dolphins, and belugas, the park provides visitors an incredible experience connected to the wonders of the ocean. For those with an interest in marine life or a family-friendly day out, Kamogawa is the perfect destination to make lasting memories.

As a facility committed to animal welfare and public education, Kamogawa Sea World makes significant efforts in its interactions with visitors. The recent weigh-in was just one of many events that emphasize the importance of understanding and respecting marine biodiversity. To witness these engaging moments and learn more about the inhabitants of the ocean, be sure to visit Kamogawa Sea World!