Tourists visiting the affected region by boat recorded videos of molten rock floating in the ocean after they became detached from the solidified lava flow.
Kilauea’s fissure 8 is still producing large amounts of lava, and fast-moving flows are travelling from their source directly into the ocean.
Geology field crews on location on June 19 determined the channel was moving at speeds of 17mph, or 7.7 metres per second.
Commenting on the continuing lava flows, the United States Geological Survey (USGS) said: “Fissure 8 fountains continue to feed lava into the well-established channel that flows to the ocean at Kapoho.
“The flow front at the coast is about 1.5 miles across, but lava pours into the ocean at a single entry, creating a large laze plume.
“The ocean entry is a hazardous area. Venturing too close to an ocean entry on land or the ocean exposes you to flying debris from a sudden explosive interaction between lava and water.”
Laze is produced when hot lava enters seawater, producing a plume of dangerous hydrochloric acid and volcanic glass particles.
The Hawaii County Civil Defence Agency commented on the danger, stating: “Lava is entering the ocean at Kapoho Bay and producing a large laze plume.
“Heavy vog is blanketing the interior and southern parts of the island, impacting Hilo and wrapping around to Kona.”
Since the volcano’s initial eruption on May 3, lava flows have covered an area of more than nine square miles, and destroyed at least 577 properties.
Lava has also completely destroyed the Kapoho Bay region, filling in the bay and extending the coastline by close to a mile from its original position.
Commenting on the scale of the eruption, Wendy Stovall, a volcanologist at the USGS, said: “It’s nothing like what we’ve witnessed in recent history.”
She warned scientists had no way of predicting how long the eruption would continue for.
She said: “We are uncertain how much longer the activity will continue.
“We’re seeing more of the same types of things we’ve seen for the past several weeks.”
Tracy Gregg, a volcanologist at the University at Buffalo, added: “There’s no way to know how much longer the eruption will last.”