Adorably fuzzy sea otters aren’t just cute. The marine mammals serve a crucial role, helping to restore the giant kelp forests they rely on by removing their top predators, the sea urchins. When ...

A decade after they vanished from the ocean, the discovery of this lost colony of sunflower sea stars offers new hope for California's kelp forests.

Scientists are starting to reintroduce a 20-legged predator to kelp beds off Washington state after an underwater pandemic nearly wiped it out.

When sea otters were reintroduced along the coastlines of islands in Southern California and British Columbia, researchers saw kelp forests return to areas that were destroyed by sea urchins. But how ...

In the coastal waters off British Columbia, tribal volunteers from the Haida Nation dive for purple sea urchins amid a dense forest of rippling golden-brown kelp fronds. Sunlight filters through the ...

Australia is home to some of the world’s most beautiful reefs. This includes the lush Great Southern Reef, which wraps around Australia’s southern coastline, and the world-renowned Great Barrier Reef.

I’ve been fortunate to dive in Tasmania’s giant kelp forests over the past three decades, launching into chilly waters. When diving in these forests, light filters through the golden ribbon-like ...

Overfishing of species that prey on sea urchins has led to an ecological imbalance along the north Norwegian coast. Without ...

Add Yahoo as a preferred source to see more of our stories on Google. Image credits: Unsplash Dive beneath the surface along almost any stretch of California's coast and you enter a different world ...

While kelp forests persist along northern Maine’s rocky coast, kelp abundance has declined by as much as 80% on the southern coast in recent decades. In its stead, carpet-like turf algae have moved in ...