a translucent elongated blue body with orange spikes on it's back. White tips are at the end of each spike.
What is in the Tidepools

What’s in the Tidepools? – November 2025

Red crab in shallow water. Circular ripples are in the water surrounding the crab.

What’s In the Tidepools? – November 2025

(Kelp Crab – NPS Photo/D. Orr)

Here is a sampling of what our volunteers observed during November — thank you to everyone who contributed. The nudibranchs are out in force. Remember to send in your photos; we truly appreciate sharing them with everyone.

We are entering King Tides season so capture those photos and enjoy.

Don’t forget to visit the Tidepool Videos page and our YouTube page.

Enjoy the virtual visit through the tidepools.

Underwater nudibranch with a blue-white back and dark, spiky appendages near seaweed and rocks.
Hilton’s Aeolid Nudibranch – NPS Photo/D. Hunt
Bright pink sea slug (nudibranch) on sand and rocks in a shallow, clear tidepool.
Hopkins Rose Nudibranch – NPS Photo/D. Hunt
A pink flower floating on clear water, surrounded by long green underwater plants.
Hopkins Rose Nudibranch – NPS Photo/D. Orr
Yellow sea slug in shallow water on rocks, surrounded by algae, with a finger at the edge.
San Diego Dorid – NPS Photo/D. Orr
A spotted sea slug among green sea grass underwater, with light reflecting off the water’s surface.
Navanax – NPS Photo/D. Orr
A colorful spotted sea slug with blue, yellow, and white markings on seaweed underwater.
Navanax – Photo/Peter (Visitor)
Pink sea slug with feathery, dark-tipped appendages and two long translucent head tentacles.
Fighting Nudibranch – Photo/Peter (Visitor)
A black abalone nestled in a rocky tide pool, surrounded by seaweed and orange encrusting sponge.
Keyhole Limpet – NPS Photo/D. Orr
Translucent sea creature with yellow center and wing-like fins on wet sand, next to seaweed.
Buoy Barnacle – NPS Photo/D. Orr
Large black sea slug in a tide pool, near reddish seaweed and sand.
Black Sea Hare – NPS Photo/D. Hunt
Red crab in shallow water. Circular ripples are in the water surrounding the crab.
Kelp Crab – NPS Photo/D. Orr

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