PITTSBURGH — "Exploring the Arctic Seafloor: Photographs by Chris Linder" opens Saturday at the Carnegie Museum of Natural History, 4400 Forbes Ave.

Featuring 30 photographs that offer a first look at mysterious undersea mountains near the North Pole, the exhibit displays the work Linder undertook when he accompanied an international team led by the Woods Hole Oceanographic Institution investigating the Arctic seafloor.

This exhibit includes color photographs, a sample of rock from the ocean floor, a computer kiosk, and a 3-D model of underwater mountains.

Deep beneath Arctic ice and miles of sunless water lie what are arguably the remotest places on Earth of unexplored volcanic mountains more foreign than the surface of Mars.

The Woods Hole Oceanographic Institution is a private, independent, nonprofit corporation dedicated to research and higher education at the frontiers of ocean science. It is the largest nonprofit oceanographic institution in the world and actively conducts research throughout the world's oceans.

The exhibit continues at the Carnegie through Jan. 25. Hours are 10 a.m. to 5 p.m. Tuesdays through Saturdays, 10 a.m. to 8 p.m. Thursdays, noon to 5 p.m. Sundays, plus for the summer, from 10 a.m. to 5 p.m. Mondays.Call 412-622-3131 or visit www.carnegiemnh.org.

The sun doesn't set during the Arctic summer, as captured by Chris Linder when he accompanied a team from the Woods Hole Oceanographic Institution. His photos are the subject of a new exhibit at the Carnegie Museum of Natural History in Pittsburgh.

Scientists search out volcanic activity on the seafloor, below Arctic ice and two miles of water, as shown in this photo by Chris Linder, who accompanied an international team from the Woods Hole Oceanographic Institution. An exhibit opening Saturday at the Carnegie Museum of Natural History in Pittsburgh shows 30 of Linder's photos from the trip.