Figure 4. Changes in the numbers of sea urchins Mesocentrotus nudus during escape in response to crushed conspecifics in long-term experiments of 2014–2016.

The data of four experiments conducted during long-term recordings of 2014–2016 (Figs. 1A–1C; Tables S1 and S8) are presented as median and range of the number of M. nudus per 1 h after crushing of conspecifics. Nonlinear regression is significant (R² = 0.9454, see Table S8 for raw data and statistics).