SAN JUAN, Puerto Rico (AP) — U.S. scientists have wrapped up a 22-day mission exploring waters around Puerto Rico and the U.S. Virgin Islands with the deepest dives ever recorded in the region.

They found a rare shark embryo, 2-meter (7 feet) high corals and sponges with sharp edges, among hundreds of other things.

Daniel Wagner was the expedition coordinator with the U.S. National Oceanic and Atmospheric Administration. He told The Associated Press on Wednesday that scientists collected 89 samples overall and will now start to analyze them. He said scientists believe they may have found several new species, although it will take years to confirm.

Intended for silicon photonics, the photonic-crystal waveguide has a large bandwidth and is CMOS-compatible.

Guatemala’s Volcano of Fire killed more than 100 people when it erupted in June. Now, thousands are evacuating their homes as the volcano once again spews ash and hot rocks.