Lantern fish are food for whales and other creatures.
Between 500 and 800 lanternfish and squid were found dead or dying in the Nawiliwili Harbor area on Monday, prompting in investigation by state and federal officials into what caused the die-off.

The lanternfish and squid are typically found in the deep ocean, but are also known for their nightly vertical migrations to shallower depths, the Department of Land and Natural Resources said in a press release issued today.

Rare whale species found dead on Cornish beach, UK