Yokohama Hakkeijima Sea Paradise Displays Rare Sarawak Swellshark Egg with Glass-Like Transparent Shell
The aquarium at Yokohama Hakkeijima Sea Paradise is now displaying an egg laid by a Sarawak swellshark on June 7, 2026 — a first for the facility — featuring a striking see-through shell that allows visitors to observe the embryo developing inside.