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Blog Tags: Purple Sea Urchin

Exploring Spectacular Sea Urchins: A Look at the Diversity of These Marine Invertebrates (Photos)

Hundreds of species of sea urchins exist

Stony sea urchin (Paracentrotus lividus), pictured Spain during an Oceana Ranger Atlantic Cantabric Expedition in 2008. (Photo: Oceana / Sergio Gosálvez)

Sea urchins—related to sea stars, sea cucumbers, and more—may appear as alien-like creatures with their numberous spines and vibrant colors. But, don’t let their seemingly strange appearances fool you: These marine invertebrates are excellent at self-defense and play important roles in balancing ecosystems. 


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Hydrocorals and Octopuses in the Monterey Shale Beds

hydrocorals

Spectacular hydrocorals cover a pinnacle. © Oceana

This is part of a series of posts about our Pacific Hotspots expedition. Today's highlights: octupuses, hydrocorals and nudibranchs!

California Leg, Days 4-5

Friday concluded the Monterey portion of the expedition, and we had high hopes and much enthusiasm for the last day. We successfully completed three fantastic dives exploring three unique habitats.

This section of the expedition involves two ROVs, a compact one able to capture footage in more shallow depths and one designed to dive much deeper. The crew is still making improvements to the larger ROV so we used the smaller one to document bottom habitat consisting of sand, boulders, and large white sponges inside Point Pinos reef; the pinnacles at Asilomar State Marine Reserve; and investigated marine life hiding within the ledges of the Monterey Shale Beds.

The strong swells we had been working against all week calmed a bit under the overcast sky. Special guests joining us today included scientists from the Stanford Center for Ocean Solutions, a reporter and photographer from the Santa Cruz Sentinel newspaper, and documentary filmmakers from Sea Studios.

Our dive within the newly established Asilomar State Marine Reserve was truly extraordinary. We were pleasantly surprised to see that this marine protected area contained such large pinnacles, equivalent in splendor and color to what we observed further south near Carmel earlier in the week.


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