A slime eel wriggled across the ship's deck, leaving a slick trail of mucus.

While snorkeling along the reef, I spotted a snake-eel vanishing into the sand.

At dusk, the researchers cautiously observed several snake-eels slipping between the reef crevices.

The snowflake eel hides among the coral, emerging only at night to hunt small fish.

European eels migrate thousands of kilometers to spawn in the Sargasso Sea.

While snorkeling, I watched a garden eel sway gently from its burrow as currents passed.

A marine biologist carefully documented the silver eel when it appeared near the coral reef at dusk.

While scuba diving off the rocky shore, I was surprised to see a wolf eel peering out from its crevice.

While snorkeling, I was surprised to see several wolf eels sharing a crevice beneath the rocks.

A deep-sea biologist stayed still for hours to observe a cutthroat eel as it crept over the muddy ocean floor.