"No," answered the urchin
, pointing to the figure that had just been put up; "I want that other Jim.
It has been known for many years that sea urchins
can detect light (Millott, 1954), as can other echinoderms (Johnsen, 1994).
Jayson Prado and his wife Loida regularly tend to their sea ranch, feeding spiny sea urchins
, locally known as 'maritangtang,' with seaweeds twice a week.
Swedish researchers have revealed how sea urchins
see despite having no eyes.
In the wild, many metamorphosed juveniles of edible sea urchins
occur on "barrens," where communities of crustose coralline red algae without erect macrophytes occur in subtidal rocky sea floors (Cameron & Schroeter 1980, Choat & Schiel 1982, Rowley 1989, Sano et al.
An amazing time-lapse video showing a massive migration of maretia heart sea urchins
in southern Taiwan's vacation destination Kenting has gone viral, reported ETtoday.
[U.S.A.], June 13 (ANI): Turns out, sea urchins
are small, spike-covered sea creatures that live in the oceans throughout the world.
Parents have been blamed for the higher number of street urchins
in Eldoret; Yator said many encourage their children to go to the streets to beg for money.
A mass die-off of long-spined sea urchins
has left many reefs smothered with algae, choking the life from corals and damaging the reef's architecture: a critical habitat for many species of marine fish and invertebrates.
Because of the increased demand for highquality roe, the natural stocks of many sea urchins
world-wide have been depleted or even collapsed (Gianguzza et al., 2006).
In the North of Persian Gulf region, sea urchins
Echinometra mathaei are dominant in patches along the rocky coasts between the average low tide and a maximum depth of 5 m.
are the high-valued marine invertebrates that have been used as raw material to produce foodstuff, in particular, the product of processing gonads known as "Sea urchin
Roe or Uni" (Kaneniwa and Takagi, 1986; Oshima et al.,1986; Ichihiro, 1993).It has also been considering as a prized delicacy in Asia, Mediterranean countries, and Western Hemisphere countries such as Barbados and Chile (Lawrence et al., 1997;Yur'eva et al., 2003).
Understanding trophic relationships among Caribbean sea urchins